Line data Source code
1 : /*
2 : * Wi-Fi Direct - P2P module
3 : * Copyright (c) 2009-2010, Atheros Communications
4 : *
5 : * This software may be distributed under the terms of the BSD license.
6 : * See README for more details.
7 : */
8 :
9 : #include "includes.h"
10 :
11 : #include "common.h"
12 : #include "eloop.h"
13 : #include "common/ieee802_11_defs.h"
14 : #include "common/ieee802_11_common.h"
15 : #include "common/wpa_ctrl.h"
16 : #include "crypto/sha256.h"
17 : #include "crypto/crypto.h"
18 : #include "wps/wps_i.h"
19 : #include "p2p_i.h"
20 : #include "p2p.h"
21 :
22 :
23 : static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
24 : static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
25 : static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
26 : const u8 *sa, const u8 *data, size_t len,
27 : int rx_freq);
28 : static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
29 : const u8 *sa, const u8 *data,
30 : size_t len);
31 : static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
32 : static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
33 :
34 :
35 : /*
36 : * p2p_scan recovery timeout
37 : *
38 : * Many drivers are using 30 second timeout on scan results. Allow a bit larger
39 : * timeout for this to avoid hitting P2P timeout unnecessarily.
40 : */
41 : #define P2P_SCAN_TIMEOUT 35
42 :
43 : /**
44 : * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
45 : * entries will be removed
46 : */
47 : #ifndef P2P_PEER_EXPIRATION_AGE
48 : #define P2P_PEER_EXPIRATION_AGE 60
49 : #endif /* P2P_PEER_EXPIRATION_AGE */
50 :
51 : #define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
52 :
53 429 : static void p2p_expire_peers(struct p2p_data *p2p)
54 : {
55 : struct p2p_device *dev, *n;
56 : struct os_reltime now;
57 : size_t i;
58 :
59 429 : os_get_reltime(&now);
60 512 : dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
61 83 : if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
62 80 : continue;
63 :
64 3 : if (dev == p2p->go_neg_peer) {
65 : /*
66 : * GO Negotiation is in progress with the peer, so
67 : * don't expire the peer entry until GO Negotiation
68 : * fails or times out.
69 : */
70 2 : continue;
71 : }
72 :
73 2 : if (p2p->cfg->go_connected &&
74 2 : p2p->cfg->go_connected(p2p->cfg->cb_ctx,
75 1 : dev->info.p2p_device_addr)) {
76 : /*
77 : * We are connected as a client to a group in which the
78 : * peer is the GO, so do not expire the peer entry.
79 : */
80 0 : os_get_reltime(&dev->last_seen);
81 0 : continue;
82 : }
83 :
84 1 : for (i = 0; i < p2p->num_groups; i++) {
85 0 : if (p2p_group_is_client_connected(
86 0 : p2p->groups[i], dev->info.p2p_device_addr))
87 0 : break;
88 : }
89 1 : if (i < p2p->num_groups) {
90 : /*
91 : * The peer is connected as a client in a group where
92 : * we are the GO, so do not expire the peer entry.
93 : */
94 0 : os_get_reltime(&dev->last_seen);
95 0 : continue;
96 : }
97 :
98 6 : p2p_dbg(p2p, "Expiring old peer entry " MACSTR,
99 6 : MAC2STR(dev->info.p2p_device_addr));
100 1 : dl_list_del(&dev->list);
101 1 : p2p_device_free(p2p, dev);
102 : }
103 429 : }
104 :
105 :
106 429 : static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
107 : {
108 429 : struct p2p_data *p2p = eloop_ctx;
109 429 : p2p_expire_peers(p2p);
110 429 : eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
111 : p2p_expiration_timeout, p2p, NULL);
112 429 : }
113 :
114 :
115 47130 : static const char * p2p_state_txt(int state)
116 : {
117 47130 : switch (state) {
118 : case P2P_IDLE:
119 33326 : return "IDLE";
120 : case P2P_SEARCH:
121 4472 : return "SEARCH";
122 : case P2P_CONNECT:
123 1744 : return "CONNECT";
124 : case P2P_CONNECT_LISTEN:
125 180 : return "CONNECT_LISTEN";
126 : case P2P_GO_NEG:
127 900 : return "GO_NEG";
128 : case P2P_LISTEN_ONLY:
129 1744 : return "LISTEN_ONLY";
130 : case P2P_WAIT_PEER_CONNECT:
131 1921 : return "WAIT_PEER_CONNECT";
132 : case P2P_WAIT_PEER_IDLE:
133 1548 : return "WAIT_PEER_IDLE";
134 : case P2P_SD_DURING_FIND:
135 276 : return "SD_DURING_FIND";
136 : case P2P_PROVISIONING:
137 601 : return "PROVISIONING";
138 : case P2P_PD_DURING_FIND:
139 76 : return "PD_DURING_FIND";
140 : case P2P_INVITE:
141 337 : return "INVITE";
142 : case P2P_INVITE_LISTEN:
143 5 : return "INVITE_LISTEN";
144 : default:
145 0 : return "?";
146 : }
147 : }
148 :
149 :
150 6 : const char * p2p_get_state_txt(struct p2p_data *p2p)
151 : {
152 6 : return p2p_state_txt(p2p->state);
153 : }
154 :
155 :
156 20 : struct p2ps_advertisement * p2p_get_p2ps_adv_list(struct p2p_data *p2p)
157 : {
158 20 : return p2p ? p2p->p2ps_adv_list : NULL;
159 : }
160 :
161 :
162 20 : void p2p_set_intended_addr(struct p2p_data *p2p, const u8 *intended_addr)
163 : {
164 20 : if (p2p && intended_addr)
165 20 : os_memcpy(p2p->intended_addr, intended_addr, ETH_ALEN);
166 20 : }
167 :
168 :
169 58 : u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
170 : {
171 58 : struct p2p_device *dev = NULL;
172 :
173 58 : if (!addr || !p2p)
174 0 : return 0;
175 :
176 58 : dev = p2p_get_device(p2p, addr);
177 58 : if (dev)
178 57 : return dev->wps_prov_info;
179 : else
180 1 : return 0;
181 : }
182 :
183 :
184 206 : void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
185 : {
186 206 : struct p2p_device *dev = NULL;
187 :
188 206 : if (!addr || !p2p)
189 206 : return;
190 :
191 206 : dev = p2p_get_device(p2p, addr);
192 206 : if (dev)
193 183 : dev->wps_prov_info = 0;
194 : }
195 :
196 :
197 14359 : void p2p_set_state(struct p2p_data *p2p, int new_state)
198 : {
199 28718 : p2p_dbg(p2p, "State %s -> %s",
200 14359 : p2p_state_txt(p2p->state), p2p_state_txt(new_state));
201 14359 : p2p->state = new_state;
202 :
203 14359 : if (new_state == P2P_IDLE && p2p->pending_channel) {
204 0 : p2p_dbg(p2p, "Apply change in listen channel");
205 0 : p2p->cfg->reg_class = p2p->pending_reg_class;
206 0 : p2p->cfg->channel = p2p->pending_channel;
207 0 : p2p->pending_reg_class = 0;
208 0 : p2p->pending_channel = 0;
209 : }
210 14359 : }
211 :
212 :
213 2498 : void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
214 : {
215 2498 : p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
216 2498 : p2p_state_txt(p2p->state), sec, usec);
217 2498 : eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
218 2498 : eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
219 2498 : }
220 :
221 :
222 12334 : void p2p_clear_timeout(struct p2p_data *p2p)
223 : {
224 12334 : p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
225 12334 : eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
226 12334 : }
227 :
228 :
229 24 : void p2p_go_neg_failed(struct p2p_data *p2p, int status)
230 : {
231 : struct p2p_go_neg_results res;
232 24 : struct p2p_device *peer = p2p->go_neg_peer;
233 :
234 24 : if (!peer)
235 24 : return;
236 :
237 24 : eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
238 24 : if (p2p->state != P2P_SEARCH) {
239 : /*
240 : * Clear timeouts related to GO Negotiation if no new p2p_find
241 : * has been started.
242 : */
243 23 : p2p_clear_timeout(p2p);
244 23 : p2p_set_state(p2p, P2P_IDLE);
245 : }
246 :
247 24 : peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
248 24 : peer->wps_method = WPS_NOT_READY;
249 24 : peer->oob_pw_id = 0;
250 24 : wpabuf_free(peer->go_neg_conf);
251 24 : peer->go_neg_conf = NULL;
252 24 : p2p->go_neg_peer = NULL;
253 :
254 24 : os_memset(&res, 0, sizeof(res));
255 24 : res.status = status;
256 24 : os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
257 24 : os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
258 24 : p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
259 : }
260 :
261 :
262 1133 : static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
263 : {
264 : unsigned int r, tu;
265 : int freq;
266 : struct wpabuf *ies;
267 :
268 1133 : p2p_dbg(p2p, "Starting short listen state (state=%s)",
269 1133 : p2p_state_txt(p2p->state));
270 :
271 1133 : if (p2p->pending_listen_freq) {
272 : /* We have a pending p2p_listen request */
273 1 : p2p_dbg(p2p, "p2p_listen command pending already");
274 1 : return;
275 : }
276 :
277 1132 : freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
278 1132 : if (freq < 0) {
279 0 : p2p_dbg(p2p, "Unknown regulatory class/channel");
280 0 : return;
281 : }
282 :
283 1132 : if (os_get_random((u8 *) &r, sizeof(r)) < 0)
284 0 : r = 0;
285 2264 : tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
286 1132 : p2p->min_disc_int) * 100;
287 1132 : if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
288 0 : tu = p2p->max_disc_tu;
289 1132 : if (!dev_disc && tu < 100)
290 0 : tu = 100; /* Need to wait in non-device discovery use cases */
291 1132 : if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
292 0 : tu = p2p->cfg->max_listen * 1000 / 1024;
293 :
294 1132 : if (tu == 0) {
295 0 : p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
296 0 : p2p_set_timeout(p2p, 0, 0);
297 0 : return;
298 : }
299 :
300 1132 : ies = p2p_build_probe_resp_ies(p2p);
301 1132 : if (ies == NULL)
302 0 : return;
303 :
304 1132 : p2p->pending_listen_freq = freq;
305 1132 : p2p->pending_listen_sec = 0;
306 1132 : p2p->pending_listen_usec = 1024 * tu;
307 :
308 1132 : if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
309 : ies) < 0) {
310 0 : p2p_dbg(p2p, "Failed to start listen mode");
311 0 : p2p->pending_listen_freq = 0;
312 : }
313 1132 : wpabuf_free(ies);
314 : }
315 :
316 :
317 645 : int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
318 : {
319 : int freq;
320 : struct wpabuf *ies;
321 :
322 645 : p2p_dbg(p2p, "Going to listen(only) state");
323 :
324 645 : if (p2p->pending_listen_freq) {
325 : /* We have a pending p2p_listen request */
326 2 : p2p_dbg(p2p, "p2p_listen command pending already");
327 2 : return -1;
328 : }
329 :
330 643 : freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
331 643 : if (freq < 0) {
332 0 : p2p_dbg(p2p, "Unknown regulatory class/channel");
333 0 : return -1;
334 : }
335 :
336 643 : p2p->pending_listen_sec = timeout / 1000;
337 643 : p2p->pending_listen_usec = (timeout % 1000) * 1000;
338 :
339 643 : if (p2p->p2p_scan_running) {
340 1 : if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
341 0 : p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
342 0 : return 0;
343 : }
344 1 : p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
345 1 : p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
346 1 : return 0;
347 : }
348 :
349 642 : ies = p2p_build_probe_resp_ies(p2p);
350 642 : if (ies == NULL)
351 0 : return -1;
352 :
353 642 : p2p->pending_listen_freq = freq;
354 :
355 642 : if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
356 253 : p2p_dbg(p2p, "Failed to start listen mode");
357 253 : p2p->pending_listen_freq = 0;
358 253 : wpabuf_free(ies);
359 253 : return -1;
360 : }
361 389 : wpabuf_free(ies);
362 :
363 389 : p2p_set_state(p2p, P2P_LISTEN_ONLY);
364 :
365 389 : return 0;
366 : }
367 :
368 :
369 342 : static void p2p_device_clear_reported(struct p2p_data *p2p)
370 : {
371 : struct p2p_device *dev;
372 431 : dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
373 89 : dev->flags &= ~P2P_DEV_REPORTED;
374 89 : dev->sd_reqs = 0;
375 : }
376 342 : }
377 :
378 :
379 : /**
380 : * p2p_get_device - Fetch a peer entry
381 : * @p2p: P2P module context from p2p_init()
382 : * @addr: P2P Device Address of the peer
383 : * Returns: Pointer to the device entry or %NULL if not found
384 : */
385 6098 : struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
386 : {
387 : struct p2p_device *dev;
388 6853 : dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
389 5507 : if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
390 4752 : return dev;
391 : }
392 1346 : return NULL;
393 : }
394 :
395 :
396 : /**
397 : * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
398 : * @p2p: P2P module context from p2p_init()
399 : * @addr: P2P Interface Address of the peer
400 : * Returns: Pointer to the device entry or %NULL if not found
401 : */
402 153 : struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
403 : const u8 *addr)
404 : {
405 : struct p2p_device *dev;
406 327 : dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
407 182 : if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
408 8 : return dev;
409 : }
410 145 : return NULL;
411 : }
412 :
413 :
414 : /**
415 : * p2p_create_device - Create a peer entry
416 : * @p2p: P2P module context from p2p_init()
417 : * @addr: P2P Device Address of the peer
418 : * Returns: Pointer to the device entry or %NULL on failure
419 : *
420 : * If there is already an entry for the peer, it will be returned instead of
421 : * creating a new one.
422 : */
423 1626 : static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
424 : const u8 *addr)
425 : {
426 1626 : struct p2p_device *dev, *oldest = NULL;
427 1626 : size_t count = 0;
428 :
429 1626 : dev = p2p_get_device(p2p, addr);
430 1626 : if (dev)
431 1078 : return dev;
432 :
433 633 : dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
434 85 : count++;
435 86 : if (oldest == NULL ||
436 1 : os_reltime_before(&dev->last_seen, &oldest->last_seen))
437 84 : oldest = dev;
438 : }
439 548 : if (count + 1 > p2p->cfg->max_peers && oldest) {
440 0 : p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
441 0 : dl_list_del(&oldest->list);
442 0 : p2p_device_free(p2p, oldest);
443 : }
444 :
445 548 : dev = os_zalloc(sizeof(*dev));
446 548 : if (dev == NULL)
447 0 : return NULL;
448 548 : dl_list_add(&p2p->devices, &dev->list);
449 548 : os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
450 :
451 548 : return dev;
452 : }
453 :
454 :
455 25 : static void p2p_copy_client_info(struct p2p_device *dev,
456 : struct p2p_client_info *cli)
457 : {
458 25 : os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
459 25 : dev->info.device_name[cli->dev_name_len] = '\0';
460 25 : dev->info.dev_capab = cli->dev_capab;
461 25 : dev->info.config_methods = cli->config_methods;
462 25 : os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
463 25 : dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
464 25 : os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
465 : dev->info.wps_sec_dev_type_list_len);
466 25 : }
467 :
468 :
469 799 : static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
470 : const u8 *go_interface_addr, int freq,
471 : const u8 *gi, size_t gi_len)
472 : {
473 : struct p2p_group_info info;
474 : size_t c;
475 : struct p2p_device *dev;
476 :
477 799 : if (gi == NULL)
478 770 : return 0;
479 :
480 29 : if (p2p_group_info_parse(gi, gi_len, &info) < 0)
481 0 : return -1;
482 :
483 : /*
484 : * Clear old data for this group; if the devices are still in the
485 : * group, the information will be restored in the loop following this.
486 : */
487 71 : dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
488 42 : if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
489 : ETH_ALEN) == 0) {
490 9 : os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
491 9 : os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
492 : }
493 : }
494 :
495 58 : for (c = 0; c < info.num_clients; c++) {
496 29 : struct p2p_client_info *cli = &info.client[c];
497 29 : if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
498 : ETH_ALEN) == 0)
499 1 : continue; /* ignore our own entry */
500 28 : dev = p2p_get_device(p2p, cli->p2p_device_addr);
501 28 : if (dev) {
502 13 : if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
503 : P2P_DEV_PROBE_REQ_ONLY)) {
504 : /*
505 : * Update information since we have not
506 : * received this directly from the client.
507 : */
508 10 : p2p_copy_client_info(dev, cli);
509 : } else {
510 : /*
511 : * Need to update P2P Client Discoverability
512 : * flag since it is valid only in P2P Group
513 : * Info attribute.
514 : */
515 3 : dev->info.dev_capab &=
516 : ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
517 6 : dev->info.dev_capab |=
518 3 : cli->dev_capab &
519 : P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
520 : }
521 13 : if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
522 1 : dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
523 : }
524 : } else {
525 15 : dev = p2p_create_device(p2p, cli->p2p_device_addr);
526 15 : if (dev == NULL)
527 0 : continue;
528 15 : dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
529 15 : p2p_copy_client_info(dev, cli);
530 15 : dev->oper_freq = freq;
531 30 : p2p->cfg->dev_found(p2p->cfg->cb_ctx,
532 15 : dev->info.p2p_device_addr,
533 15 : &dev->info, 1);
534 15 : dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
535 : }
536 :
537 28 : os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
538 : ETH_ALEN);
539 28 : os_get_reltime(&dev->last_seen);
540 28 : os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
541 28 : os_memcpy(dev->member_in_go_iface, go_interface_addr,
542 : ETH_ALEN);
543 : }
544 :
545 29 : return 0;
546 : }
547 :
548 :
549 1524 : static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
550 : int probe_req, const struct p2p_message *msg)
551 : {
552 1524 : os_memcpy(dev->info.device_name, msg->device_name,
553 : sizeof(dev->info.device_name));
554 :
555 2584 : if (msg->manufacturer &&
556 1060 : msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
557 1060 : os_memset(dev->info.manufacturer, 0,
558 : sizeof(dev->info.manufacturer));
559 1060 : os_memcpy(dev->info.manufacturer, msg->manufacturer,
560 : msg->manufacturer_len);
561 : }
562 :
563 2584 : if (msg->model_name &&
564 1060 : msg->model_name_len < sizeof(dev->info.model_name)) {
565 1060 : os_memset(dev->info.model_name, 0,
566 : sizeof(dev->info.model_name));
567 1060 : os_memcpy(dev->info.model_name, msg->model_name,
568 : msg->model_name_len);
569 : }
570 :
571 2584 : if (msg->model_number &&
572 1060 : msg->model_number_len < sizeof(dev->info.model_number)) {
573 1060 : os_memset(dev->info.model_number, 0,
574 : sizeof(dev->info.model_number));
575 1060 : os_memcpy(dev->info.model_number, msg->model_number,
576 : msg->model_number_len);
577 : }
578 :
579 2345 : if (msg->serial_number &&
580 821 : msg->serial_number_len < sizeof(dev->info.serial_number)) {
581 821 : os_memset(dev->info.serial_number, 0,
582 : sizeof(dev->info.serial_number));
583 821 : os_memcpy(dev->info.serial_number, msg->serial_number,
584 : msg->serial_number_len);
585 : }
586 :
587 1524 : if (msg->pri_dev_type)
588 1282 : os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
589 : sizeof(dev->info.pri_dev_type));
590 242 : else if (msg->wps_pri_dev_type)
591 241 : os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
592 : sizeof(dev->info.pri_dev_type));
593 :
594 1524 : if (msg->wps_sec_dev_type_list) {
595 23 : os_memcpy(dev->info.wps_sec_dev_type_list,
596 : msg->wps_sec_dev_type_list,
597 : msg->wps_sec_dev_type_list_len);
598 23 : dev->info.wps_sec_dev_type_list_len =
599 23 : msg->wps_sec_dev_type_list_len;
600 : }
601 :
602 1524 : if (msg->capability) {
603 : /*
604 : * P2P Client Discoverability bit is reserved in all frames
605 : * that use this function, so do not change its value here.
606 : */
607 1514 : dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
608 1514 : dev->info.dev_capab |= msg->capability[0] &
609 : ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
610 1514 : dev->info.group_capab = msg->capability[1];
611 : }
612 :
613 1524 : if (msg->ext_listen_timing) {
614 6 : dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
615 6 : dev->ext_listen_interval =
616 6 : WPA_GET_LE16(msg->ext_listen_timing + 2);
617 : }
618 :
619 1524 : if (!probe_req) {
620 : u16 new_config_methods;
621 1284 : new_config_methods = msg->config_methods ?
622 : msg->config_methods : msg->wps_config_methods;
623 2558 : if (new_config_methods &&
624 1274 : dev->info.config_methods != new_config_methods) {
625 3744 : p2p_dbg(p2p, "Update peer " MACSTR
626 : " config_methods 0x%x -> 0x%x",
627 2808 : MAC2STR(dev->info.p2p_device_addr),
628 468 : dev->info.config_methods,
629 : new_config_methods);
630 468 : dev->info.config_methods = new_config_methods;
631 : }
632 : }
633 1524 : }
634 :
635 :
636 1224 : static void p2p_update_peer_vendor_elems(struct p2p_device *dev, const u8 *ies,
637 : size_t ies_len)
638 : {
639 : const u8 *pos, *end;
640 : u8 id, len;
641 :
642 1224 : wpabuf_free(dev->info.vendor_elems);
643 1224 : dev->info.vendor_elems = NULL;
644 :
645 1224 : end = ies + ies_len;
646 :
647 8596 : for (pos = ies; pos + 1 < end; pos += len) {
648 7372 : id = *pos++;
649 7372 : len = *pos++;
650 :
651 7372 : if (pos + len > end)
652 0 : break;
653 :
654 7372 : if (id != WLAN_EID_VENDOR_SPECIFIC || len < 3)
655 4581 : continue;
656 :
657 2791 : if (len >= 4) {
658 2791 : u32 type = WPA_GET_BE32(pos);
659 :
660 2791 : if (type == WPA_IE_VENDOR_TYPE ||
661 2322 : type == WMM_IE_VENDOR_TYPE ||
662 1290 : type == WPS_IE_VENDOR_TYPE ||
663 42 : type == P2P_IE_VENDOR_TYPE ||
664 : type == WFD_IE_VENDOR_TYPE)
665 2783 : continue;
666 : }
667 :
668 : /* Unknown vendor element - make raw IE data available */
669 8 : if (wpabuf_resize(&dev->info.vendor_elems, 2 + len) < 0)
670 0 : break;
671 8 : wpabuf_put_data(dev->info.vendor_elems, pos - 2, 2 + len);
672 : }
673 1224 : }
674 :
675 :
676 1224 : static int p2p_compare_wfd_info(struct p2p_device *dev,
677 : const struct p2p_message *msg)
678 : {
679 1224 : if (dev->info.wfd_subelems && msg->wfd_subelems) {
680 25 : if (dev->info.wfd_subelems->used != msg->wfd_subelems->used)
681 2 : return 1;
682 :
683 23 : return os_memcmp(dev->info.wfd_subelems->buf,
684 : msg->wfd_subelems->buf,
685 : dev->info.wfd_subelems->used);
686 : }
687 1199 : if (dev->info.wfd_subelems || msg->wfd_subelems)
688 9 : return 1;
689 :
690 1190 : return 0;
691 : }
692 :
693 :
694 : /**
695 : * p2p_add_device - Add peer entries based on scan results or P2P frames
696 : * @p2p: P2P module context from p2p_init()
697 : * @addr: Source address of Beacon or Probe Response frame (may be either
698 : * P2P Device Address or P2P Interface Address)
699 : * @level: Signal level (signal strength of the received frame from the peer)
700 : * @freq: Frequency on which the Beacon or Probe Response frame was received
701 : * @rx_time: Time when the result was received
702 : * @ies: IEs from the Beacon or Probe Response frame
703 : * @ies_len: Length of ies buffer in octets
704 : * @scan_res: Whether this was based on scan results
705 : * Returns: 0 on success, -1 on failure
706 : *
707 : * If the scan result is for a GO, the clients in the group will also be added
708 : * to the peer table. This function can also be used with some other frames
709 : * like Provision Discovery Request that contains P2P Capability and P2P Device
710 : * Info attributes.
711 : */
712 1425 : int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
713 : struct os_reltime *rx_time, int level, const u8 *ies,
714 : size_t ies_len, int scan_res)
715 : {
716 : struct p2p_device *dev;
717 : struct p2p_message msg;
718 : const u8 *p2p_dev_addr;
719 : int wfd_changed;
720 : int i;
721 : struct os_reltime time_now;
722 :
723 1425 : os_memset(&msg, 0, sizeof(msg));
724 1425 : if (p2p_parse_ies(ies, ies_len, &msg)) {
725 0 : p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
726 0 : p2p_parse_free(&msg);
727 0 : return -1;
728 : }
729 :
730 1425 : if (msg.p2p_device_addr)
731 1338 : p2p_dev_addr = msg.p2p_device_addr;
732 87 : else if (msg.device_id)
733 3 : p2p_dev_addr = msg.device_id;
734 : else {
735 84 : p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
736 84 : p2p_parse_free(&msg);
737 84 : return -1;
738 : }
739 :
740 1342 : if (!is_zero_ether_addr(p2p->peer_filter) &&
741 1 : os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
742 6 : p2p_dbg(p2p, "Do not add peer filter for " MACSTR
743 6 : " due to peer filter", MAC2STR(p2p_dev_addr));
744 1 : p2p_parse_free(&msg);
745 1 : return 0;
746 : }
747 :
748 1340 : dev = p2p_create_device(p2p, p2p_dev_addr);
749 1340 : if (dev == NULL) {
750 0 : p2p_parse_free(&msg);
751 0 : return -1;
752 : }
753 :
754 1340 : if (rx_time == NULL) {
755 425 : os_get_reltime(&time_now);
756 425 : rx_time = &time_now;
757 : }
758 :
759 : /*
760 : * Update the device entry only if the new peer
761 : * entry is newer than the one previously stored.
762 : */
763 2418 : if (dev->last_seen.sec > 0 &&
764 1078 : os_reltime_before(rx_time, &dev->last_seen)) {
765 464 : p2p_dbg(p2p, "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u)",
766 116 : (unsigned int) rx_time->sec,
767 116 : (unsigned int) rx_time->usec,
768 116 : (unsigned int) dev->last_seen.sec,
769 116 : (unsigned int) dev->last_seen.usec);
770 116 : p2p_parse_free(&msg);
771 116 : return -1;
772 : }
773 :
774 1224 : os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
775 :
776 1224 : dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
777 :
778 1224 : if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
779 60 : os_memcpy(dev->interface_addr, addr, ETH_ALEN);
780 2374 : if (msg.ssid &&
781 1831 : (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
782 681 : os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
783 : != 0)) {
784 469 : os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
785 469 : dev->oper_ssid_len = msg.ssid[1];
786 : }
787 :
788 1224 : if (msg.adv_service_instance && msg.adv_service_instance_len) {
789 24 : wpabuf_free(dev->info.p2ps_instance);
790 48 : dev->info.p2ps_instance = wpabuf_alloc_copy(
791 24 : msg.adv_service_instance, msg.adv_service_instance_len);
792 : }
793 :
794 2023 : if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
795 1598 : *msg.ds_params >= 1 && *msg.ds_params <= 14) {
796 : int ds_freq;
797 799 : if (*msg.ds_params == 14)
798 0 : ds_freq = 2484;
799 : else
800 799 : ds_freq = 2407 + *msg.ds_params * 5;
801 799 : if (freq != ds_freq) {
802 0 : p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
803 : freq, ds_freq);
804 0 : freq = ds_freq;
805 : }
806 : }
807 :
808 1224 : if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
809 64 : p2p_dbg(p2p, "Update Listen frequency based on scan results ("
810 : MACSTR " %d -> %d MHz (DS param %d)",
811 48 : MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
812 16 : freq, msg.ds_params ? *msg.ds_params : -1);
813 : }
814 1224 : if (scan_res) {
815 799 : dev->listen_freq = freq;
816 799 : if (msg.group_info)
817 29 : dev->oper_freq = freq;
818 : }
819 1224 : dev->info.level = level;
820 :
821 1224 : p2p_copy_wps_info(p2p, dev, 0, &msg);
822 :
823 13464 : for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
824 12240 : wpabuf_free(dev->info.wps_vendor_ext[i]);
825 12240 : dev->info.wps_vendor_ext[i] = NULL;
826 : }
827 :
828 1225 : for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
829 1225 : if (msg.wps_vendor_ext[i] == NULL)
830 1224 : break;
831 2 : dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
832 1 : msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
833 1 : if (dev->info.wps_vendor_ext[i] == NULL)
834 0 : break;
835 : }
836 :
837 1224 : wfd_changed = p2p_compare_wfd_info(dev, &msg);
838 :
839 1224 : if (msg.wfd_subelems) {
840 34 : wpabuf_free(dev->info.wfd_subelems);
841 34 : dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
842 : }
843 :
844 1224 : if (scan_res) {
845 799 : p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
846 : msg.group_info, msg.group_info_len);
847 : }
848 :
849 1224 : p2p_parse_free(&msg);
850 :
851 1224 : p2p_update_peer_vendor_elems(dev, ies, ies_len);
852 :
853 2026 : if (dev->flags & P2P_DEV_REPORTED && !wfd_changed &&
854 802 : (!msg.adv_service_instance ||
855 0 : (dev->flags & P2P_DEV_P2PS_REPORTED)))
856 802 : return 0;
857 :
858 844 : p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
859 422 : freq, (unsigned int) rx_time->sec,
860 422 : (unsigned int) rx_time->usec);
861 422 : if (dev->flags & P2P_DEV_USER_REJECTED) {
862 0 : p2p_dbg(p2p, "Do not report rejected device");
863 0 : return 0;
864 : }
865 :
866 422 : if (dev->info.config_methods == 0 &&
867 0 : (freq == 2412 || freq == 2437 || freq == 2462)) {
868 : /*
869 : * If we have only seen a Beacon frame from a GO, we do not yet
870 : * know what WPS config methods it supports. Since some
871 : * applications use config_methods value from P2P-DEVICE-FOUND
872 : * events, postpone reporting this peer until we've fully
873 : * discovered its capabilities.
874 : *
875 : * At least for now, do this only if the peer was detected on
876 : * one of the social channels since that peer can be easily be
877 : * found again and there are no limitations of having to use
878 : * passive scan on this channels, so this can be done through
879 : * Probe Response frame that includes the config_methods
880 : * information.
881 : */
882 12 : p2p_dbg(p2p, "Do not report peer " MACSTR
883 12 : " with unknown config methods", MAC2STR(addr));
884 2 : return 0;
885 : }
886 :
887 840 : p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
888 420 : !(dev->flags & P2P_DEV_REPORTED_ONCE));
889 420 : dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
890 :
891 420 : if (msg.adv_service_instance)
892 24 : dev->flags |= P2P_DEV_P2PS_REPORTED;
893 :
894 420 : return 0;
895 : }
896 :
897 :
898 548 : static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
899 : {
900 : int i;
901 :
902 548 : if (p2p->go_neg_peer == dev) {
903 : /*
904 : * If GO Negotiation is in progress, report that it has failed.
905 : */
906 0 : p2p_go_neg_failed(p2p, -1);
907 : }
908 548 : if (p2p->invite_peer == dev)
909 0 : p2p->invite_peer = NULL;
910 548 : if (p2p->sd_peer == dev)
911 0 : p2p->sd_peer = NULL;
912 548 : if (p2p->pending_client_disc_go == dev)
913 1 : p2p->pending_client_disc_go = NULL;
914 :
915 : /* dev_lost() device, but only if it was previously dev_found() */
916 548 : if (dev->flags & P2P_DEV_REPORTED_ONCE)
917 946 : p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
918 473 : dev->info.p2p_device_addr);
919 :
920 6028 : for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
921 5480 : wpabuf_free(dev->info.wps_vendor_ext[i]);
922 5480 : dev->info.wps_vendor_ext[i] = NULL;
923 : }
924 :
925 548 : wpabuf_free(dev->info.wfd_subelems);
926 548 : wpabuf_free(dev->info.vendor_elems);
927 548 : wpabuf_free(dev->go_neg_conf);
928 548 : wpabuf_free(dev->info.p2ps_instance);
929 :
930 548 : os_free(dev);
931 548 : }
932 :
933 :
934 3 : static int p2p_get_next_prog_freq(struct p2p_data *p2p)
935 : {
936 : struct p2p_channels *c;
937 : struct p2p_reg_class *cla;
938 : size_t cl, ch;
939 3 : int found = 0;
940 : u8 reg_class;
941 : u8 channel;
942 : int freq;
943 :
944 3 : c = &p2p->cfg->channels;
945 4 : for (cl = 0; cl < c->reg_classes; cl++) {
946 3 : cla = &c->reg_class[cl];
947 3 : if (cla->reg_class != p2p->last_prog_scan_class)
948 1 : continue;
949 3 : for (ch = 0; ch < cla->channels; ch++) {
950 3 : if (cla->channel[ch] == p2p->last_prog_scan_chan) {
951 2 : found = 1;
952 2 : break;
953 : }
954 : }
955 2 : if (found)
956 2 : break;
957 : }
958 :
959 3 : if (!found) {
960 : /* Start from beginning */
961 1 : reg_class = c->reg_class[0].reg_class;
962 1 : channel = c->reg_class[0].channel[0];
963 : } else {
964 : /* Pick the next channel */
965 2 : ch++;
966 2 : if (ch == cla->channels) {
967 0 : cl++;
968 0 : if (cl == c->reg_classes)
969 0 : cl = 0;
970 0 : ch = 0;
971 : }
972 2 : reg_class = c->reg_class[cl].reg_class;
973 2 : channel = c->reg_class[cl].channel[ch];
974 : }
975 :
976 3 : freq = p2p_channel_to_freq(reg_class, channel);
977 3 : p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
978 : reg_class, channel, freq);
979 3 : p2p->last_prog_scan_class = reg_class;
980 3 : p2p->last_prog_scan_chan = channel;
981 :
982 3 : if (freq == 2412 || freq == 2437 || freq == 2462)
983 1 : return 0; /* No need to add social channels */
984 2 : return freq;
985 : }
986 :
987 :
988 404 : static void p2p_search(struct p2p_data *p2p)
989 : {
990 404 : int freq = 0;
991 : enum p2p_scan_type type;
992 404 : u16 pw_id = DEV_PW_DEFAULT;
993 : int res;
994 :
995 404 : if (p2p->drv_in_listen) {
996 4 : p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
997 408 : return;
998 : }
999 400 : p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1000 :
1001 400 : if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
1002 : (freq = p2p_get_next_prog_freq(p2p)) > 0) {
1003 2 : type = P2P_SCAN_SOCIAL_PLUS_ONE;
1004 2 : p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
1005 : } else {
1006 398 : type = P2P_SCAN_SOCIAL;
1007 398 : p2p_dbg(p2p, "Starting search");
1008 : }
1009 :
1010 800 : res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
1011 400 : p2p->num_req_dev_types, p2p->req_dev_types,
1012 400 : p2p->find_dev_id, pw_id);
1013 400 : if (res < 0) {
1014 0 : p2p_dbg(p2p, "Scan request schedule failed");
1015 0 : p2p_continue_find(p2p);
1016 : }
1017 : }
1018 :
1019 :
1020 0 : static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
1021 : {
1022 0 : struct p2p_data *p2p = eloop_ctx;
1023 0 : p2p_dbg(p2p, "Find timeout -> stop");
1024 0 : p2p_stop_find(p2p);
1025 0 : }
1026 :
1027 :
1028 728 : void p2p_notify_scan_trigger_status(struct p2p_data *p2p, int status)
1029 : {
1030 728 : if (status != 0) {
1031 0 : p2p_dbg(p2p, "Scan request failed");
1032 : /* Do continue find even for the first p2p_find_scan */
1033 0 : p2p_continue_find(p2p);
1034 : } else {
1035 728 : p2p_dbg(p2p, "Running p2p_scan");
1036 728 : p2p->p2p_scan_running = 1;
1037 728 : eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1038 728 : eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1039 : p2p, NULL);
1040 : }
1041 728 : }
1042 :
1043 :
1044 788 : static int p2p_run_after_scan(struct p2p_data *p2p)
1045 : {
1046 : struct p2p_device *dev;
1047 : enum p2p_after_scan op;
1048 :
1049 788 : if (p2p->after_scan_tx) {
1050 7 : p2p->after_scan_tx_in_progress = 1;
1051 7 : p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
1052 35 : p2p->cfg->send_action(p2p->cfg->cb_ctx,
1053 7 : p2p->after_scan_tx->freq,
1054 7 : p2p->after_scan_tx->dst,
1055 7 : p2p->after_scan_tx->src,
1056 7 : p2p->after_scan_tx->bssid,
1057 7 : (u8 *) (p2p->after_scan_tx + 1),
1058 7 : p2p->after_scan_tx->len,
1059 7 : p2p->after_scan_tx->wait_time);
1060 7 : os_free(p2p->after_scan_tx);
1061 7 : p2p->after_scan_tx = NULL;
1062 7 : return 1;
1063 : }
1064 :
1065 781 : op = p2p->start_after_scan;
1066 781 : p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1067 781 : switch (op) {
1068 : case P2P_AFTER_SCAN_NOTHING:
1069 771 : break;
1070 : case P2P_AFTER_SCAN_LISTEN:
1071 1 : p2p_dbg(p2p, "Start previously requested Listen state");
1072 2 : p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
1073 1 : p2p->pending_listen_usec / 1000);
1074 1 : return 1;
1075 : case P2P_AFTER_SCAN_CONNECT:
1076 54 : p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
1077 54 : MAC2STR(p2p->after_scan_peer));
1078 9 : dev = p2p_get_device(p2p, p2p->after_scan_peer);
1079 9 : if (dev == NULL) {
1080 0 : p2p_dbg(p2p, "Peer not known anymore");
1081 0 : break;
1082 : }
1083 9 : p2p_connect_send(p2p, dev);
1084 9 : return 1;
1085 : }
1086 :
1087 771 : return 0;
1088 : }
1089 :
1090 :
1091 0 : static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1092 : {
1093 0 : struct p2p_data *p2p = eloop_ctx;
1094 : int running;
1095 0 : p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
1096 0 : running = p2p->p2p_scan_running;
1097 : /* Make sure we recover from missed scan results callback */
1098 0 : p2p->p2p_scan_running = 0;
1099 :
1100 0 : if (running)
1101 0 : p2p_run_after_scan(p2p);
1102 0 : }
1103 :
1104 :
1105 11096 : static void p2p_free_req_dev_types(struct p2p_data *p2p)
1106 : {
1107 11096 : p2p->num_req_dev_types = 0;
1108 11096 : os_free(p2p->req_dev_types);
1109 11096 : p2p->req_dev_types = NULL;
1110 11096 : }
1111 :
1112 :
1113 129 : static int p2ps_gen_hash(struct p2p_data *p2p, const char *str, u8 *hash)
1114 : {
1115 : u8 buf[SHA256_MAC_LEN];
1116 : char str_buf[256];
1117 : const u8 *adv_array;
1118 : size_t i, adv_len;
1119 :
1120 129 : if (!str || !hash)
1121 0 : return 0;
1122 :
1123 129 : if (!str[0]) {
1124 0 : os_memcpy(hash, p2p->wild_card_hash, P2PS_HASH_LEN);
1125 0 : return 1;
1126 : }
1127 :
1128 129 : adv_array = (u8 *) str_buf;
1129 129 : adv_len = os_strlen(str);
1130 :
1131 2275 : for (i = 0; str[i] && i < adv_len; i++) {
1132 2146 : if (str[i] >= 'A' && str[i] <= 'Z')
1133 4 : str_buf[i] = str[i] - 'A' + 'a';
1134 : else
1135 2142 : str_buf[i] = str[i];
1136 : }
1137 :
1138 129 : if (sha256_vector(1, &adv_array, &adv_len, buf))
1139 0 : return 0;
1140 :
1141 129 : os_memcpy(hash, buf, P2PS_HASH_LEN);
1142 129 : return 1;
1143 : }
1144 :
1145 :
1146 342 : int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1147 : enum p2p_discovery_type type,
1148 : unsigned int num_req_dev_types, const u8 *req_dev_types,
1149 : const u8 *dev_id, unsigned int search_delay,
1150 : u8 seek_count, const char **seek)
1151 : {
1152 : int res;
1153 :
1154 342 : p2p_dbg(p2p, "Starting find (type=%d)", type);
1155 342 : os_get_reltime(&p2p->find_start);
1156 342 : if (p2p->p2p_scan_running) {
1157 13 : p2p_dbg(p2p, "p2p_scan is already running");
1158 : }
1159 :
1160 342 : p2p_free_req_dev_types(p2p);
1161 342 : if (req_dev_types && num_req_dev_types) {
1162 5 : p2p->req_dev_types = os_malloc(num_req_dev_types *
1163 : WPS_DEV_TYPE_LEN);
1164 5 : if (p2p->req_dev_types == NULL)
1165 0 : return -1;
1166 5 : os_memcpy(p2p->req_dev_types, req_dev_types,
1167 : num_req_dev_types * WPS_DEV_TYPE_LEN);
1168 5 : p2p->num_req_dev_types = num_req_dev_types;
1169 : }
1170 :
1171 342 : if (dev_id) {
1172 4 : os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1173 4 : p2p->find_dev_id = p2p->find_dev_id_buf;
1174 : } else
1175 338 : p2p->find_dev_id = NULL;
1176 :
1177 342 : if (seek_count == 0 || !seek) {
1178 : /* Not an ASP search */
1179 316 : p2p->p2ps_seek = 0;
1180 26 : } else if (seek_count == 1 && seek && (!seek[0] || !seek[0][0])) {
1181 : /*
1182 : * An empty seek string means no hash values, but still an ASP
1183 : * search.
1184 : */
1185 7 : p2p->p2ps_seek_count = 0;
1186 7 : p2p->p2ps_seek = 1;
1187 38 : } else if (seek && seek_count <= P2P_MAX_QUERY_HASH) {
1188 : u8 buf[P2PS_HASH_LEN];
1189 : int i;
1190 :
1191 19 : p2p->p2ps_seek_count = seek_count;
1192 39 : for (i = 0; i < seek_count; i++) {
1193 21 : if (!p2ps_gen_hash(p2p, seek[i], buf))
1194 0 : continue;
1195 :
1196 : /* If asking for wildcard, don't do others */
1197 21 : if (os_memcmp(buf, p2p->wild_card_hash,
1198 : P2PS_HASH_LEN) == 0) {
1199 1 : p2p->p2ps_seek_count = 0;
1200 1 : break;
1201 : }
1202 :
1203 20 : os_memcpy(&p2p->query_hash[i * P2PS_HASH_LEN], buf,
1204 : P2PS_HASH_LEN);
1205 : }
1206 19 : p2p->p2ps_seek = 1;
1207 : } else {
1208 0 : p2p->p2ps_seek_count = 0;
1209 0 : p2p->p2ps_seek = 1;
1210 : }
1211 :
1212 : /* Special case to perform wildcard search */
1213 342 : if (p2p->p2ps_seek_count == 0 && p2p->p2ps_seek) {
1214 8 : p2p->p2ps_seek_count = 1;
1215 8 : os_memcpy(&p2p->query_hash, p2p->wild_card_hash, P2PS_HASH_LEN);
1216 : }
1217 :
1218 342 : p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1219 342 : p2p_clear_timeout(p2p);
1220 342 : p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1221 342 : p2p->find_type = type;
1222 342 : p2p_device_clear_reported(p2p);
1223 342 : p2p_set_state(p2p, P2P_SEARCH);
1224 342 : p2p->search_delay = search_delay;
1225 342 : p2p->in_search_delay = 0;
1226 342 : eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1227 342 : p2p->last_p2p_find_timeout = timeout;
1228 342 : if (timeout)
1229 29 : eloop_register_timeout(timeout, 0, p2p_find_timeout,
1230 : p2p, NULL);
1231 342 : switch (type) {
1232 : case P2P_FIND_START_WITH_FULL:
1233 : case P2P_FIND_PROGRESSIVE:
1234 40 : res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1235 : p2p->num_req_dev_types,
1236 20 : p2p->req_dev_types, dev_id,
1237 : DEV_PW_DEFAULT);
1238 20 : break;
1239 : case P2P_FIND_ONLY_SOCIAL:
1240 644 : res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1241 : p2p->num_req_dev_types,
1242 322 : p2p->req_dev_types, dev_id,
1243 : DEV_PW_DEFAULT);
1244 322 : break;
1245 : default:
1246 0 : return -1;
1247 : }
1248 :
1249 342 : if (res != 0 && p2p->p2p_scan_running) {
1250 13 : p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1251 : /* wait for the previous p2p_scan to complete */
1252 13 : res = 0; /* do not report failure */
1253 329 : } else if (res != 0) {
1254 0 : p2p_dbg(p2p, "Failed to start p2p_scan");
1255 0 : p2p_set_state(p2p, P2P_IDLE);
1256 0 : eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1257 : }
1258 :
1259 342 : return res;
1260 : }
1261 :
1262 :
1263 10674 : void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1264 : {
1265 10674 : p2p_dbg(p2p, "Stopping find");
1266 10674 : eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1267 10674 : p2p_clear_timeout(p2p);
1268 10674 : if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
1269 321 : p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1270 :
1271 10674 : p2p->p2ps_seek_count = 0;
1272 :
1273 10674 : p2p_set_state(p2p, P2P_IDLE);
1274 10674 : p2p_free_req_dev_types(p2p);
1275 10674 : p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1276 10674 : if (p2p->go_neg_peer)
1277 27 : p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1278 10674 : p2p->go_neg_peer = NULL;
1279 10674 : p2p->sd_peer = NULL;
1280 10674 : p2p->invite_peer = NULL;
1281 10674 : p2p_stop_listen_for_freq(p2p, freq);
1282 10674 : }
1283 :
1284 :
1285 10706 : void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1286 : {
1287 10706 : if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1288 102 : p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1289 10808 : return;
1290 : }
1291 10604 : if (p2p->in_listen) {
1292 565 : p2p->in_listen = 0;
1293 565 : p2p_clear_timeout(p2p);
1294 : }
1295 10604 : if (p2p->drv_in_listen) {
1296 : /*
1297 : * The driver may not deliver callback to p2p_listen_end()
1298 : * when the operation gets canceled, so clear the internal
1299 : * variable that is tracking driver state.
1300 : */
1301 439 : p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1302 439 : p2p->drv_in_listen = 0;
1303 : }
1304 10604 : p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1305 : }
1306 :
1307 :
1308 1252 : void p2p_stop_listen(struct p2p_data *p2p)
1309 : {
1310 1252 : if (p2p->state != P2P_LISTEN_ONLY) {
1311 1247 : p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1312 2499 : return;
1313 : }
1314 :
1315 5 : p2p_stop_listen_for_freq(p2p, 0);
1316 5 : p2p_set_state(p2p, P2P_IDLE);
1317 : }
1318 :
1319 :
1320 10574 : void p2p_stop_find(struct p2p_data *p2p)
1321 : {
1322 10574 : p2p->pending_listen_freq = 0;
1323 10574 : p2p_stop_find_for_freq(p2p, 0);
1324 10574 : }
1325 :
1326 :
1327 55 : static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1328 : unsigned int force_freq,
1329 : unsigned int pref_freq, int go)
1330 : {
1331 : u8 op_class, op_channel;
1332 55 : unsigned int freq = force_freq ? force_freq : pref_freq;
1333 :
1334 55 : p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1335 : force_freq, pref_freq, go);
1336 55 : if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1337 0 : p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1338 0 : return -1;
1339 : }
1340 :
1341 55 : if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1342 0 : (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1343 : op_channel))) {
1344 0 : p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1345 : freq, op_class, op_channel);
1346 0 : return -1;
1347 : }
1348 :
1349 55 : p2p->op_reg_class = op_class;
1350 55 : p2p->op_channel = op_channel;
1351 :
1352 55 : if (force_freq) {
1353 52 : p2p->channels.reg_classes = 1;
1354 52 : p2p->channels.reg_class[0].channels = 1;
1355 52 : p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1356 52 : p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1357 : } else {
1358 3 : os_memcpy(&p2p->channels, &p2p->cfg->channels,
1359 : sizeof(struct p2p_channels));
1360 : }
1361 :
1362 55 : return 0;
1363 : }
1364 :
1365 :
1366 226 : static void p2p_prepare_channel_best(struct p2p_data *p2p)
1367 : {
1368 : u8 op_class, op_channel;
1369 226 : const int op_classes_5ghz[] = { 124, 115, 0 };
1370 226 : const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1371 226 : const int op_classes_vht[] = { 128, 0 };
1372 :
1373 226 : p2p_dbg(p2p, "Prepare channel best");
1374 :
1375 226 : if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1376 0 : p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1377 0 : p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1378 : == 0) {
1379 0 : p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1380 0 : p2p->op_reg_class = op_class;
1381 0 : p2p->op_channel = op_channel;
1382 226 : } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1383 0 : p2p_supported_freq(p2p, p2p->best_freq_5) &&
1384 0 : p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1385 : == 0) {
1386 0 : p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1387 0 : p2p->op_reg_class = op_class;
1388 0 : p2p->op_channel = op_channel;
1389 226 : } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1390 0 : p2p_supported_freq(p2p, p2p->best_freq_24) &&
1391 0 : p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1392 : &op_channel) == 0) {
1393 0 : p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1394 0 : p2p->op_reg_class = op_class;
1395 0 : p2p->op_channel = op_channel;
1396 228 : } else if (p2p->cfg->num_pref_chan > 0 &&
1397 4 : p2p_channels_includes(&p2p->cfg->channels,
1398 2 : p2p->cfg->pref_chan[0].op_class,
1399 2 : p2p->cfg->pref_chan[0].chan)) {
1400 2 : p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1401 2 : p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1402 2 : p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1403 224 : } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1404 : &p2p->op_reg_class, &p2p->op_channel) ==
1405 : 0) {
1406 18 : p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1407 18 : p2p->op_reg_class, p2p->op_channel);
1408 215 : } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1409 : &p2p->op_reg_class, &p2p->op_channel) ==
1410 : 0) {
1411 2 : p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1412 2 : p2p->op_reg_class, p2p->op_channel);
1413 214 : } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1414 : &p2p->op_reg_class, &p2p->op_channel) ==
1415 : 0) {
1416 0 : p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1417 0 : p2p->op_reg_class, p2p->op_channel);
1418 428 : } else if (p2p_channels_includes(&p2p->cfg->channels,
1419 214 : p2p->cfg->op_reg_class,
1420 214 : p2p->cfg->op_channel)) {
1421 211 : p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1422 211 : p2p->op_reg_class = p2p->cfg->op_reg_class;
1423 211 : p2p->op_channel = p2p->cfg->op_channel;
1424 3 : } else if (p2p_channel_random_social(&p2p->cfg->channels,
1425 : &p2p->op_reg_class,
1426 : &p2p->op_channel) == 0) {
1427 2 : p2p_dbg(p2p, "Select random available social channel (op_class %u channel %u) as operating channel preference",
1428 2 : p2p->op_reg_class, p2p->op_channel);
1429 : } else {
1430 : /* Select any random available channel from the first available
1431 : * operating class */
1432 2 : p2p_channel_select(&p2p->cfg->channels, NULL,
1433 : &p2p->op_reg_class,
1434 : &p2p->op_channel);
1435 4 : p2p_dbg(p2p, "Select random available channel %d from operating class %d as operating channel preference",
1436 4 : p2p->op_channel, p2p->op_reg_class);
1437 : }
1438 :
1439 226 : os_memcpy(&p2p->channels, &p2p->cfg->channels,
1440 : sizeof(struct p2p_channels));
1441 226 : }
1442 :
1443 :
1444 : /**
1445 : * p2p_prepare_channel - Select operating channel for GO Negotiation
1446 : * @p2p: P2P module context from p2p_init()
1447 : * @dev: Selected peer device
1448 : * @force_freq: Forced frequency in MHz or 0 if not forced
1449 : * @pref_freq: Preferred frequency in MHz or 0 if no preference
1450 : * @go: Whether the local end will be forced to be GO
1451 : * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1452 : *
1453 : * This function is used to do initial operating channel selection for GO
1454 : * Negotiation prior to having received peer information. The selected channel
1455 : * may be further optimized in p2p_reselect_channel() once the peer information
1456 : * is available.
1457 : */
1458 281 : int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1459 : unsigned int force_freq, unsigned int pref_freq, int go)
1460 : {
1461 281 : p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1462 : force_freq, pref_freq, go);
1463 281 : if (force_freq || pref_freq) {
1464 110 : if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1465 : 0)
1466 0 : return -1;
1467 : } else {
1468 226 : p2p_prepare_channel_best(p2p);
1469 : }
1470 281 : p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1471 281 : if (go)
1472 104 : p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1473 177 : else if (!force_freq)
1474 147 : p2p_channels_union_inplace(&p2p->channels,
1475 147 : &p2p->cfg->cli_channels);
1476 281 : p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1477 :
1478 843 : p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1479 562 : p2p->op_reg_class, p2p->op_channel,
1480 : force_freq ? " (forced)" : "");
1481 :
1482 281 : if (force_freq)
1483 52 : dev->flags |= P2P_DEV_FORCE_FREQ;
1484 : else
1485 229 : dev->flags &= ~P2P_DEV_FORCE_FREQ;
1486 :
1487 281 : return 0;
1488 : }
1489 :
1490 :
1491 236 : static void p2p_set_dev_persistent(struct p2p_device *dev,
1492 : int persistent_group)
1493 : {
1494 236 : switch (persistent_group) {
1495 : case 0:
1496 185 : dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1497 : P2P_DEV_PREFER_PERSISTENT_RECONN);
1498 185 : break;
1499 : case 1:
1500 21 : dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1501 21 : dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1502 21 : break;
1503 : case 2:
1504 30 : dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1505 : P2P_DEV_PREFER_PERSISTENT_RECONN;
1506 30 : break;
1507 : }
1508 236 : }
1509 :
1510 :
1511 155 : int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1512 : enum p2p_wps_method wps_method,
1513 : int go_intent, const u8 *own_interface_addr,
1514 : unsigned int force_freq, int persistent_group,
1515 : const u8 *force_ssid, size_t force_ssid_len,
1516 : int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
1517 : {
1518 : struct p2p_device *dev;
1519 :
1520 2015 : p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1521 : " GO Intent=%d Intended Interface Address=" MACSTR
1522 : " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1523 : "oob_pw_id=%u",
1524 1860 : MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1525 : wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
1526 :
1527 155 : dev = p2p_get_device(p2p, peer_addr);
1528 155 : if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1529 6 : p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1530 6 : MAC2STR(peer_addr));
1531 1 : return -1;
1532 : }
1533 :
1534 154 : if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1535 : go_intent == 15) < 0)
1536 0 : return -1;
1537 :
1538 154 : if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1539 1 : if (!(dev->info.dev_capab &
1540 : P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1541 0 : p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1542 : " that is in a group and is not discoverable",
1543 0 : MAC2STR(peer_addr));
1544 0 : return -1;
1545 : }
1546 1 : if (dev->oper_freq <= 0) {
1547 0 : p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1548 : " with incomplete information",
1549 0 : MAC2STR(peer_addr));
1550 0 : return -1;
1551 : }
1552 :
1553 : /*
1554 : * First, try to connect directly. If the peer does not
1555 : * acknowledge frames, assume it is sleeping and use device
1556 : * discoverability via the GO at that point.
1557 : */
1558 : }
1559 :
1560 154 : p2p->ssid_set = 0;
1561 154 : if (force_ssid) {
1562 1 : wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1563 : force_ssid, force_ssid_len);
1564 1 : os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1565 1 : p2p->ssid_len = force_ssid_len;
1566 1 : p2p->ssid_set = 1;
1567 : }
1568 :
1569 154 : dev->flags &= ~P2P_DEV_NOT_YET_READY;
1570 154 : dev->flags &= ~P2P_DEV_USER_REJECTED;
1571 154 : dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1572 154 : dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1573 154 : if (pd_before_go_neg)
1574 2 : dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1575 : else {
1576 152 : dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1577 : /*
1578 : * Assign dialog token and tie breaker here to use the same
1579 : * values in each retry within the same GO Negotiation exchange.
1580 : */
1581 152 : dev->dialog_token++;
1582 152 : if (dev->dialog_token == 0)
1583 0 : dev->dialog_token = 1;
1584 152 : dev->tie_breaker = p2p->next_tie_breaker;
1585 152 : p2p->next_tie_breaker = !p2p->next_tie_breaker;
1586 : }
1587 154 : dev->connect_reqs = 0;
1588 154 : dev->go_neg_req_sent = 0;
1589 154 : dev->go_state = UNKNOWN_GO;
1590 154 : p2p_set_dev_persistent(dev, persistent_group);
1591 154 : p2p->go_intent = go_intent;
1592 154 : os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1593 :
1594 154 : if (p2p->state != P2P_IDLE)
1595 133 : p2p_stop_find(p2p);
1596 :
1597 154 : if (p2p->after_scan_tx) {
1598 : /*
1599 : * We need to drop the pending frame to avoid issues with the
1600 : * new GO Negotiation, e.g., when the pending frame was from a
1601 : * previous attempt at starting a GO Negotiation.
1602 : */
1603 0 : p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1604 0 : os_free(p2p->after_scan_tx);
1605 0 : p2p->after_scan_tx = NULL;
1606 : }
1607 :
1608 154 : dev->wps_method = wps_method;
1609 154 : dev->oob_pw_id = oob_pw_id;
1610 154 : dev->status = P2P_SC_SUCCESS;
1611 :
1612 154 : if (p2p->p2p_scan_running) {
1613 9 : p2p_dbg(p2p, "p2p_scan running - delay connect send");
1614 9 : p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1615 9 : os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1616 9 : return 0;
1617 : }
1618 145 : p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1619 :
1620 145 : return p2p_connect_send(p2p, dev);
1621 : }
1622 :
1623 :
1624 82 : int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1625 : enum p2p_wps_method wps_method,
1626 : int go_intent, const u8 *own_interface_addr,
1627 : unsigned int force_freq, int persistent_group,
1628 : const u8 *force_ssid, size_t force_ssid_len,
1629 : unsigned int pref_freq, u16 oob_pw_id)
1630 : {
1631 : struct p2p_device *dev;
1632 :
1633 1066 : p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1634 : " GO Intent=%d Intended Interface Address=" MACSTR
1635 : " wps_method=%d persistent_group=%d oob_pw_id=%u",
1636 984 : MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1637 : wps_method, persistent_group, oob_pw_id);
1638 :
1639 82 : dev = p2p_get_device(p2p, peer_addr);
1640 82 : if (dev == NULL) {
1641 0 : p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1642 0 : MAC2STR(peer_addr));
1643 0 : return -1;
1644 : }
1645 :
1646 82 : if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1647 : 15) < 0)
1648 0 : return -1;
1649 :
1650 82 : p2p->ssid_set = 0;
1651 82 : if (force_ssid) {
1652 0 : wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1653 : force_ssid, force_ssid_len);
1654 0 : os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1655 0 : p2p->ssid_len = force_ssid_len;
1656 0 : p2p->ssid_set = 1;
1657 : }
1658 :
1659 82 : dev->flags &= ~P2P_DEV_NOT_YET_READY;
1660 82 : dev->flags &= ~P2P_DEV_USER_REJECTED;
1661 82 : dev->go_neg_req_sent = 0;
1662 82 : dev->go_state = UNKNOWN_GO;
1663 82 : p2p_set_dev_persistent(dev, persistent_group);
1664 82 : p2p->go_intent = go_intent;
1665 82 : os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1666 :
1667 82 : dev->wps_method = wps_method;
1668 82 : dev->oob_pw_id = oob_pw_id;
1669 82 : dev->status = P2P_SC_SUCCESS;
1670 :
1671 82 : return 0;
1672 : }
1673 :
1674 :
1675 35 : void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1676 : struct p2p_device *dev, struct p2p_message *msg)
1677 : {
1678 35 : os_get_reltime(&dev->last_seen);
1679 :
1680 35 : p2p_copy_wps_info(p2p, dev, 0, msg);
1681 :
1682 35 : if (msg->listen_channel) {
1683 : int freq;
1684 35 : freq = p2p_channel_to_freq(msg->listen_channel[3],
1685 35 : msg->listen_channel[4]);
1686 35 : if (freq < 0) {
1687 0 : p2p_dbg(p2p, "Unknown peer Listen channel: "
1688 : "country=%c%c(0x%02x) reg_class=%u channel=%u",
1689 0 : msg->listen_channel[0],
1690 0 : msg->listen_channel[1],
1691 0 : msg->listen_channel[2],
1692 0 : msg->listen_channel[3],
1693 0 : msg->listen_channel[4]);
1694 : } else {
1695 245 : p2p_dbg(p2p, "Update peer " MACSTR
1696 : " Listen channel: %u -> %u MHz",
1697 210 : MAC2STR(dev->info.p2p_device_addr),
1698 : dev->listen_freq, freq);
1699 35 : dev->listen_freq = freq;
1700 : }
1701 : }
1702 :
1703 35 : if (msg->wfd_subelems) {
1704 0 : wpabuf_free(dev->info.wfd_subelems);
1705 0 : dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1706 : }
1707 :
1708 35 : if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1709 17 : dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1710 17 : p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1711 : } else {
1712 162 : p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1713 : MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1714 : "listen_freq=%d",
1715 108 : MAC2STR(dev->info.p2p_device_addr),
1716 36 : dev->info.dev_capab, dev->info.group_capab,
1717 18 : dev->info.device_name, dev->listen_freq);
1718 : }
1719 :
1720 35 : dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1721 :
1722 35 : if (dev->flags & P2P_DEV_USER_REJECTED) {
1723 1 : p2p_dbg(p2p, "Do not report rejected device");
1724 36 : return;
1725 : }
1726 :
1727 68 : p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1728 34 : !(dev->flags & P2P_DEV_REPORTED_ONCE));
1729 34 : dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1730 : }
1731 :
1732 :
1733 203 : void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1734 : {
1735 203 : os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1736 203 : p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1737 203 : os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1738 : p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1739 203 : *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1740 203 : }
1741 :
1742 :
1743 94 : int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1744 : {
1745 94 : if (p2p->ssid_set) {
1746 9 : os_memcpy(params->ssid, p2p->ssid, p2p->ssid_len);
1747 9 : params->ssid_len = p2p->ssid_len;
1748 : } else {
1749 85 : p2p_build_ssid(p2p, params->ssid, ¶ms->ssid_len);
1750 : }
1751 94 : p2p->ssid_set = 0;
1752 :
1753 94 : p2p_random(params->passphrase, p2p->cfg->passphrase_len);
1754 94 : return 0;
1755 : }
1756 :
1757 :
1758 200 : void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1759 : {
1760 : struct p2p_go_neg_results res;
1761 200 : int go = peer->go_state == LOCAL_GO;
1762 : struct p2p_channels intersection;
1763 :
1764 1400 : p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1765 1200 : MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1766 :
1767 200 : os_memset(&res, 0, sizeof(res));
1768 200 : res.role_go = go;
1769 200 : os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1770 200 : os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1771 200 : res.wps_method = peer->wps_method;
1772 200 : if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1773 51 : if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1774 30 : res.persistent_group = 2;
1775 : else
1776 21 : res.persistent_group = 1;
1777 : }
1778 :
1779 200 : if (go) {
1780 : /* Setup AP mode for WPS provisioning */
1781 100 : res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1782 100 : p2p->op_channel);
1783 100 : os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1784 100 : res.ssid_len = p2p->ssid_len;
1785 100 : p2p_random(res.passphrase, p2p->cfg->passphrase_len);
1786 : } else {
1787 100 : res.freq = peer->oper_freq;
1788 100 : if (p2p->ssid_len) {
1789 100 : os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1790 100 : res.ssid_len = p2p->ssid_len;
1791 : }
1792 : }
1793 :
1794 200 : p2p_channels_dump(p2p, "own channels", &p2p->channels);
1795 200 : p2p_channels_dump(p2p, "peer channels", &peer->channels);
1796 200 : p2p_channels_intersect(&p2p->channels, &peer->channels,
1797 : &intersection);
1798 200 : if (go) {
1799 100 : p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1800 100 : p2p_channels_dump(p2p, "intersection after no-GO removal",
1801 : &intersection);
1802 : }
1803 :
1804 200 : p2p_channels_to_freqs(&intersection, res.freq_list,
1805 : P2P_MAX_CHANNELS);
1806 :
1807 200 : res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1808 :
1809 200 : p2p_clear_timeout(p2p);
1810 200 : p2p->ssid_set = 0;
1811 200 : peer->go_neg_req_sent = 0;
1812 200 : peer->wps_method = WPS_NOT_READY;
1813 200 : peer->oob_pw_id = 0;
1814 200 : wpabuf_free(peer->go_neg_conf);
1815 200 : peer->go_neg_conf = NULL;
1816 :
1817 200 : p2p_set_state(p2p, P2P_PROVISIONING);
1818 200 : p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1819 200 : }
1820 :
1821 :
1822 726 : static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1823 : const u8 *data, size_t len, int rx_freq)
1824 : {
1825 726 : p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1826 726 : wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1827 :
1828 726 : if (len < 1)
1829 727 : return;
1830 :
1831 725 : switch (data[0]) {
1832 : case P2P_GO_NEG_REQ:
1833 159 : p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1834 159 : break;
1835 : case P2P_GO_NEG_RESP:
1836 156 : p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1837 156 : break;
1838 : case P2P_GO_NEG_CONF:
1839 100 : p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1840 100 : break;
1841 : case P2P_INVITATION_REQ:
1842 82 : p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1843 : rx_freq);
1844 82 : break;
1845 : case P2P_INVITATION_RESP:
1846 50 : p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1847 50 : break;
1848 : case P2P_PROV_DISC_REQ:
1849 82 : p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1850 82 : break;
1851 : case P2P_PROV_DISC_RESP:
1852 80 : p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1853 80 : break;
1854 : case P2P_DEV_DISC_REQ:
1855 8 : p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1856 8 : break;
1857 : case P2P_DEV_DISC_RESP:
1858 8 : p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1859 8 : break;
1860 : default:
1861 0 : p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1862 0 : data[0]);
1863 0 : break;
1864 : }
1865 : }
1866 :
1867 :
1868 882 : static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1869 : const u8 *sa, const u8 *bssid, const u8 *data,
1870 : size_t len, int freq)
1871 : {
1872 882 : if (len < 1)
1873 0 : return;
1874 :
1875 882 : switch (data[0]) {
1876 : case WLAN_PA_VENDOR_SPECIFIC:
1877 726 : data++;
1878 726 : len--;
1879 726 : if (len < 4)
1880 0 : return;
1881 726 : if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1882 0 : return;
1883 :
1884 726 : data += 4;
1885 726 : len -= 4;
1886 :
1887 726 : p2p_rx_p2p_action(p2p, sa, data, len, freq);
1888 726 : break;
1889 : case WLAN_PA_GAS_INITIAL_REQ:
1890 60 : p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1891 60 : break;
1892 : case WLAN_PA_GAS_INITIAL_RESP:
1893 60 : p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1894 60 : break;
1895 : case WLAN_PA_GAS_COMEBACK_REQ:
1896 18 : p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1897 18 : break;
1898 : case WLAN_PA_GAS_COMEBACK_RESP:
1899 18 : p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1900 18 : break;
1901 : }
1902 : }
1903 :
1904 :
1905 1009 : void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1906 : const u8 *bssid, u8 category,
1907 : const u8 *data, size_t len, int freq)
1908 : {
1909 1009 : if (category == WLAN_ACTION_PUBLIC) {
1910 882 : p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1911 882 : return;
1912 : }
1913 :
1914 127 : if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1915 117 : return;
1916 :
1917 10 : if (len < 4)
1918 0 : return;
1919 :
1920 10 : if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1921 0 : return;
1922 10 : data += 4;
1923 10 : len -= 4;
1924 :
1925 : /* P2P action frame */
1926 10 : p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1927 10 : wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1928 :
1929 10 : if (len < 1)
1930 0 : return;
1931 10 : switch (data[0]) {
1932 : case P2P_NOA:
1933 0 : p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1934 : /* TODO */
1935 0 : break;
1936 : case P2P_PRESENCE_REQ:
1937 5 : p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1938 5 : break;
1939 : case P2P_PRESENCE_RESP:
1940 5 : p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1941 5 : break;
1942 : case P2P_GO_DISC_REQ:
1943 0 : p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1944 0 : break;
1945 : default:
1946 0 : p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1947 0 : break;
1948 : }
1949 : }
1950 :
1951 :
1952 2 : static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1953 : {
1954 2 : struct p2p_data *p2p = eloop_ctx;
1955 2 : if (p2p->go_neg_peer == NULL)
1956 2 : return;
1957 2 : if (p2p->pending_listen_freq) {
1958 0 : p2p_dbg(p2p, "Clear pending_listen_freq for p2p_go_neg_start");
1959 0 : p2p->pending_listen_freq = 0;
1960 : }
1961 2 : p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1962 2 : p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1963 : /*
1964 : * Set new timeout to make sure a previously set one does not expire
1965 : * too quickly while waiting for the GO Negotiation to complete.
1966 : */
1967 2 : p2p_set_timeout(p2p, 0, 500000);
1968 2 : p2p_connect_send(p2p, p2p->go_neg_peer);
1969 : }
1970 :
1971 :
1972 0 : static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1973 : {
1974 0 : struct p2p_data *p2p = eloop_ctx;
1975 0 : if (p2p->invite_peer == NULL)
1976 0 : return;
1977 0 : if (p2p->pending_listen_freq) {
1978 0 : p2p_dbg(p2p, "Clear pending_listen_freq for p2p_invite_start");
1979 0 : p2p->pending_listen_freq = 0;
1980 : }
1981 0 : p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1982 0 : p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
1983 : p2p->invite_dev_pw_id);
1984 : }
1985 :
1986 :
1987 1046 : static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1988 : const u8 *ie, size_t ie_len)
1989 : {
1990 : struct p2p_message msg;
1991 : struct p2p_device *dev;
1992 :
1993 1046 : os_memset(&msg, 0, sizeof(msg));
1994 1046 : if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1995 : {
1996 37 : p2p_parse_free(&msg);
1997 37 : return; /* not a P2P probe */
1998 : }
1999 :
2000 1784 : if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
2001 775 : os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
2002 : != 0) {
2003 : /* The Probe Request is not part of P2P Device Discovery. It is
2004 : * not known whether the source address of the frame is the P2P
2005 : * Device Address or P2P Interface Address. Do not add a new
2006 : * peer entry based on this frames.
2007 : */
2008 234 : p2p_parse_free(&msg);
2009 234 : return;
2010 : }
2011 :
2012 775 : dev = p2p_get_device(p2p, addr);
2013 775 : if (dev) {
2014 535 : if (dev->country[0] == 0 && msg.listen_channel)
2015 91 : os_memcpy(dev->country, msg.listen_channel, 3);
2016 535 : os_get_reltime(&dev->last_seen);
2017 535 : p2p_parse_free(&msg);
2018 535 : return; /* already known */
2019 : }
2020 :
2021 240 : dev = p2p_create_device(p2p, addr);
2022 240 : if (dev == NULL) {
2023 0 : p2p_parse_free(&msg);
2024 0 : return;
2025 : }
2026 :
2027 240 : os_get_reltime(&dev->last_seen);
2028 240 : dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
2029 :
2030 240 : if (msg.listen_channel) {
2031 240 : os_memcpy(dev->country, msg.listen_channel, 3);
2032 240 : dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
2033 240 : msg.listen_channel[4]);
2034 : }
2035 :
2036 240 : p2p_copy_wps_info(p2p, dev, 1, &msg);
2037 :
2038 240 : if (msg.wfd_subelems) {
2039 12 : wpabuf_free(dev->info.wfd_subelems);
2040 12 : dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
2041 : }
2042 :
2043 240 : p2p_parse_free(&msg);
2044 :
2045 2160 : p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
2046 : " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
2047 1680 : MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
2048 240 : dev->info.group_capab, dev->info.device_name,
2049 : dev->listen_freq);
2050 : }
2051 :
2052 :
2053 6 : struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
2054 : const u8 *addr,
2055 : struct p2p_message *msg)
2056 : {
2057 : struct p2p_device *dev;
2058 :
2059 6 : dev = p2p_get_device(p2p, addr);
2060 6 : if (dev) {
2061 0 : os_get_reltime(&dev->last_seen);
2062 0 : return dev; /* already known */
2063 : }
2064 :
2065 6 : dev = p2p_create_device(p2p, addr);
2066 6 : if (dev == NULL)
2067 0 : return NULL;
2068 :
2069 6 : p2p_add_dev_info(p2p, addr, dev, msg);
2070 :
2071 6 : return dev;
2072 : }
2073 :
2074 :
2075 23 : static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
2076 : {
2077 23 : if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
2078 2 : return 1;
2079 21 : if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
2080 0 : WPA_GET_BE32(&req_dev_type[2]) == 0 &&
2081 0 : WPA_GET_BE16(&req_dev_type[6]) == 0)
2082 0 : return 1; /* Category match with wildcard OUI/sub-category */
2083 21 : return 0;
2084 : }
2085 :
2086 :
2087 23 : int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
2088 : size_t num_req_dev_type)
2089 : {
2090 : size_t i;
2091 44 : for (i = 0; i < num_req_dev_type; i++) {
2092 23 : if (dev_type_match(dev_type, req_dev_type[i]))
2093 2 : return 1;
2094 : }
2095 21 : return 0;
2096 : }
2097 :
2098 :
2099 : /**
2100 : * p2p_match_dev_type - Match local device type with requested type
2101 : * @p2p: P2P module context from p2p_init()
2102 : * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
2103 : * Returns: 1 on match, 0 on mismatch
2104 : *
2105 : * This function can be used to match the Requested Device Type attribute in
2106 : * WPS IE with the local device types for deciding whether to reply to a Probe
2107 : * Request frame.
2108 : */
2109 978 : int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
2110 : {
2111 : struct wps_parse_attr attr;
2112 : size_t i;
2113 :
2114 978 : if (wps_parse_msg(wps, &attr))
2115 0 : return 1; /* assume no Requested Device Type attributes */
2116 :
2117 978 : if (attr.num_req_dev_type == 0)
2118 968 : return 1; /* no Requested Device Type attributes -> match */
2119 :
2120 10 : if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
2121 : attr.num_req_dev_type))
2122 0 : return 1; /* Own Primary Device Type matches */
2123 :
2124 14 : for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) {
2125 5 : if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
2126 : attr.req_dev_type,
2127 : attr.num_req_dev_type))
2128 1 : return 1; /* Own Secondary Device Type matches */
2129 : }
2130 :
2131 : /* No matching device type found */
2132 9 : return 0;
2133 : }
2134 :
2135 :
2136 2405 : struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
2137 : {
2138 : struct wpabuf *buf;
2139 : u8 *len;
2140 2405 : int pw_id = -1;
2141 2405 : size_t extra = 0;
2142 :
2143 : #ifdef CONFIG_WIFI_DISPLAY
2144 2405 : if (p2p->wfd_ie_probe_resp)
2145 51 : extra = wpabuf_len(p2p->wfd_ie_probe_resp);
2146 : #endif /* CONFIG_WIFI_DISPLAY */
2147 :
2148 2405 : if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2149 8 : extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2150 :
2151 2405 : if (p2p->query_count)
2152 25 : extra += MAX_SVC_ADV_IE_LEN;
2153 :
2154 2405 : buf = wpabuf_alloc(1000 + extra);
2155 2405 : if (buf == NULL)
2156 0 : return NULL;
2157 :
2158 2405 : if (p2p->go_neg_peer) {
2159 : /* Advertise immediate availability of WPS credential */
2160 793 : pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
2161 : }
2162 :
2163 2405 : if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
2164 0 : p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
2165 0 : wpabuf_free(buf);
2166 0 : return NULL;
2167 : }
2168 :
2169 : #ifdef CONFIG_WIFI_DISPLAY
2170 2405 : if (p2p->wfd_ie_probe_resp)
2171 51 : wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
2172 : #endif /* CONFIG_WIFI_DISPLAY */
2173 :
2174 2405 : if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2175 8 : wpabuf_put_buf(buf,
2176 8 : p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2177 :
2178 : /* P2P IE */
2179 2405 : len = p2p_buf_add_ie_hdr(buf);
2180 2405 : p2p_buf_add_capability(buf, p2p->dev_capab &
2181 : ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2182 2405 : if (p2p->ext_listen_interval)
2183 11 : p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
2184 11 : p2p->ext_listen_interval);
2185 2405 : p2p_buf_add_device_info(buf, p2p, NULL);
2186 2405 : p2p_buf_update_ie_hdr(buf, len);
2187 :
2188 2405 : if (p2p->query_count) {
2189 50 : p2p_buf_add_service_instance(buf, p2p, p2p->query_count,
2190 25 : p2p->query_hash,
2191 : p2p->p2ps_adv_list);
2192 : }
2193 :
2194 2405 : return buf;
2195 : }
2196 :
2197 :
2198 29 : static int p2p_service_find_asp(struct p2p_data *p2p, const u8 *hash)
2199 : {
2200 : struct p2ps_advertisement *adv_data;
2201 :
2202 29 : p2p_dbg(p2p, "ASP find - ASP list: %p", p2p->p2ps_adv_list);
2203 :
2204 : /* Wildcard always matches if we have actual services */
2205 29 : if (os_memcmp(hash, p2p->wild_card_hash, P2PS_HASH_LEN) == 0)
2206 8 : return p2p->p2ps_adv_list != NULL;
2207 :
2208 21 : adv_data = p2p->p2ps_adv_list;
2209 61 : while (adv_data) {
2210 36 : p2p_dbg(p2p, "ASP hash: %x =? %x", hash[0], adv_data->hash[0]);
2211 36 : if (os_memcmp(hash, adv_data->hash, P2PS_HASH_LEN) == 0)
2212 17 : return 1;
2213 19 : adv_data = adv_data->next;
2214 : }
2215 :
2216 4 : return 0;
2217 : }
2218 :
2219 :
2220 : static enum p2p_probe_req_status
2221 1046 : p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2222 : const u8 *bssid, const u8 *ie, size_t ie_len)
2223 : {
2224 : struct ieee802_11_elems elems;
2225 : struct wpabuf *buf;
2226 : struct ieee80211_mgmt *resp;
2227 : struct p2p_message msg;
2228 : struct wpabuf *ies;
2229 :
2230 1046 : if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2231 : ParseFailed) {
2232 : /* Ignore invalid Probe Request frames */
2233 0 : p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
2234 0 : return P2P_PREQ_MALFORMED;
2235 : }
2236 :
2237 1046 : if (elems.p2p == NULL) {
2238 : /* not a P2P probe - ignore it */
2239 37 : p2p_dbg(p2p, "Not a P2P probe - ignore it");
2240 37 : return P2P_PREQ_NOT_P2P;
2241 : }
2242 :
2243 1009 : if (dst && !is_broadcast_ether_addr(dst) &&
2244 0 : os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2245 : /* Not sent to the broadcast address or our P2P Device Address
2246 : */
2247 0 : p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2248 0 : MAC2STR(dst));
2249 0 : return P2P_PREQ_NOT_PROCESSED;
2250 : }
2251 :
2252 1009 : if (bssid && !is_broadcast_ether_addr(bssid)) {
2253 : /* Not sent to the Wildcard BSSID */
2254 0 : p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2255 0 : MAC2STR(bssid));
2256 0 : return P2P_PREQ_NOT_PROCESSED;
2257 : }
2258 :
2259 1784 : if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2260 775 : os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2261 : 0) {
2262 : /* not using P2P Wildcard SSID - ignore */
2263 234 : p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
2264 234 : return P2P_PREQ_NOT_PROCESSED;
2265 : }
2266 :
2267 775 : if (supp_rates_11b_only(&elems)) {
2268 : /* Indicates support for 11b rates only */
2269 0 : p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
2270 0 : return P2P_PREQ_NOT_P2P;
2271 : }
2272 :
2273 775 : os_memset(&msg, 0, sizeof(msg));
2274 775 : if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2275 : /* Could not parse P2P attributes */
2276 0 : p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
2277 0 : return P2P_PREQ_NOT_P2P;
2278 : }
2279 :
2280 775 : p2p->p2ps_svc_found = 0;
2281 :
2282 800 : if (msg.service_hash && msg.service_hash_count) {
2283 27 : const u8 *hash = msg.service_hash;
2284 27 : u8 *dest = p2p->query_hash;
2285 : u8 i;
2286 :
2287 27 : p2p->query_count = 0;
2288 48 : for (i = 0; i < msg.service_hash_count; i++) {
2289 29 : if (p2p_service_find_asp(p2p, hash)) {
2290 25 : p2p->p2ps_svc_found = 1;
2291 :
2292 25 : if (!os_memcmp(hash, p2p->wild_card_hash,
2293 : P2PS_HASH_LEN)) {
2294 : /* We found match(es) but wildcard
2295 : * will return all */
2296 8 : p2p->query_count = 1;
2297 8 : os_memcpy(p2p->query_hash, hash,
2298 : P2PS_HASH_LEN);
2299 8 : break;
2300 : }
2301 :
2302 : /* Save each matching hash */
2303 17 : if (p2p->query_count < P2P_MAX_QUERY_HASH) {
2304 17 : os_memcpy(dest, hash, P2PS_HASH_LEN);
2305 17 : dest += P2PS_HASH_LEN;
2306 17 : p2p->query_count++;
2307 : } else {
2308 : /* We found match(es) but too many to
2309 : * return all */
2310 0 : p2p->query_count = 0;
2311 0 : break;
2312 : }
2313 : }
2314 21 : hash += P2PS_HASH_LEN;
2315 : }
2316 :
2317 27 : p2p_dbg(p2p, "ASP adv found: %d", p2p->p2ps_svc_found);
2318 :
2319 : /* Probed hash unknown */
2320 27 : if (!p2p->p2ps_svc_found) {
2321 2 : p2p_parse_free(&msg);
2322 2 : return P2P_PREQ_NOT_PROCESSED;
2323 : }
2324 : } else {
2325 : /* This is not a P2PS Probe Request */
2326 748 : p2p->query_count = 0;
2327 748 : p2p_dbg(p2p, "No P2PS Hash in Probe Request");
2328 :
2329 748 : if (!p2p->in_listen || !p2p->drv_in_listen) {
2330 : /* not in Listen state - ignore Probe Request */
2331 133 : p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
2332 : p2p->in_listen, p2p->drv_in_listen);
2333 133 : p2p_parse_free(&msg);
2334 133 : return P2P_PREQ_NOT_LISTEN;
2335 : }
2336 : }
2337 :
2338 645 : if (msg.device_id &&
2339 5 : os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2340 : /* Device ID did not match */
2341 24 : p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2342 24 : MAC2STR(msg.device_id));
2343 4 : p2p_parse_free(&msg);
2344 4 : return P2P_PREQ_NOT_PROCESSED;
2345 : }
2346 :
2347 : /* Check Requested Device Type match */
2348 1271 : if (msg.wps_attributes &&
2349 635 : !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2350 : /* No match with Requested Device Type */
2351 5 : p2p_dbg(p2p, "Probe Req requestred Device Type did not match - ignore it");
2352 5 : p2p_parse_free(&msg);
2353 5 : return P2P_PREQ_NOT_PROCESSED;
2354 : }
2355 631 : p2p_parse_free(&msg);
2356 :
2357 631 : if (!p2p->cfg->send_probe_resp) {
2358 : /* Response generated elsewhere */
2359 0 : p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
2360 0 : return P2P_PREQ_NOT_PROCESSED;
2361 : }
2362 :
2363 631 : p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2364 :
2365 : /*
2366 : * We do not really have a specific BSS that this frame is advertising,
2367 : * so build a frame that has some information in valid format. This is
2368 : * really only used for discovery purposes, not to learn exact BSS
2369 : * parameters.
2370 : */
2371 631 : ies = p2p_build_probe_resp_ies(p2p);
2372 631 : if (ies == NULL)
2373 0 : return P2P_PREQ_NOT_PROCESSED;
2374 :
2375 631 : buf = wpabuf_alloc(200 + wpabuf_len(ies));
2376 631 : if (buf == NULL) {
2377 0 : wpabuf_free(ies);
2378 0 : return P2P_PREQ_NOT_PROCESSED;
2379 : }
2380 :
2381 631 : resp = NULL;
2382 631 : resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2383 :
2384 631 : resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2385 : (WLAN_FC_STYPE_PROBE_RESP << 4));
2386 631 : os_memcpy(resp->da, addr, ETH_ALEN);
2387 631 : os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2388 631 : os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2389 631 : resp->u.probe_resp.beacon_int = host_to_le16(100);
2390 : /* hardware or low-level driver will setup seq_ctrl and timestamp */
2391 631 : resp->u.probe_resp.capab_info =
2392 : host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2393 : WLAN_CAPABILITY_PRIVACY |
2394 : WLAN_CAPABILITY_SHORT_SLOT_TIME);
2395 :
2396 631 : wpabuf_put_u8(buf, WLAN_EID_SSID);
2397 631 : wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2398 631 : wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2399 :
2400 631 : wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2401 631 : wpabuf_put_u8(buf, 8);
2402 631 : wpabuf_put_u8(buf, (60 / 5) | 0x80);
2403 631 : wpabuf_put_u8(buf, 90 / 5);
2404 631 : wpabuf_put_u8(buf, (120 / 5) | 0x80);
2405 631 : wpabuf_put_u8(buf, 180 / 5);
2406 631 : wpabuf_put_u8(buf, (240 / 5) | 0x80);
2407 631 : wpabuf_put_u8(buf, 360 / 5);
2408 631 : wpabuf_put_u8(buf, 480 / 5);
2409 631 : wpabuf_put_u8(buf, 540 / 5);
2410 :
2411 631 : wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2412 631 : wpabuf_put_u8(buf, 1);
2413 631 : wpabuf_put_u8(buf, p2p->cfg->channel);
2414 :
2415 631 : wpabuf_put_buf(buf, ies);
2416 631 : wpabuf_free(ies);
2417 :
2418 631 : p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2419 :
2420 631 : wpabuf_free(buf);
2421 :
2422 631 : return P2P_PREQ_NOT_PROCESSED;
2423 : }
2424 :
2425 :
2426 : enum p2p_probe_req_status
2427 1046 : p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2428 : const u8 *bssid, const u8 *ie, size_t ie_len)
2429 : {
2430 : enum p2p_probe_req_status res;
2431 :
2432 1046 : p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2433 :
2434 1046 : res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
2435 1046 : p2p->query_count = 0;
2436 :
2437 1048 : if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2438 4 : p2p->go_neg_peer &&
2439 2 : os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2440 2 : == 0 &&
2441 2 : !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2442 : /* Received a Probe Request from GO Negotiation peer */
2443 2 : p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2444 2 : eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2445 2 : eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2446 2 : return P2P_PREQ_PROCESSED;
2447 : }
2448 :
2449 1044 : if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2450 0 : p2p->invite_peer &&
2451 0 : (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2452 0 : os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2453 : == 0) {
2454 : /* Received a Probe Request from Invite peer */
2455 0 : p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2456 0 : eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
2457 0 : eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2458 0 : return P2P_PREQ_PROCESSED;
2459 : }
2460 :
2461 1044 : return res;
2462 : }
2463 :
2464 :
2465 2059 : static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2466 : u8 *buf, size_t len, struct wpabuf *p2p_ie)
2467 : {
2468 : struct wpabuf *tmp;
2469 : u8 *lpos;
2470 : size_t tmplen;
2471 : int res;
2472 : u8 group_capab;
2473 :
2474 2059 : if (p2p_ie == NULL)
2475 2047 : return 0; /* WLAN AP is not a P2P manager */
2476 :
2477 : /*
2478 : * (Re)Association Request - P2P IE
2479 : * P2P Capability attribute (shall be present)
2480 : * P2P Interface attribute (present if concurrent device and
2481 : * P2P Management is enabled)
2482 : */
2483 12 : tmp = wpabuf_alloc(200);
2484 12 : if (tmp == NULL)
2485 0 : return -1;
2486 :
2487 12 : lpos = p2p_buf_add_ie_hdr(tmp);
2488 12 : group_capab = 0;
2489 12 : if (p2p->num_groups > 0) {
2490 0 : group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2491 0 : if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2492 0 : (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2493 0 : p2p->cross_connect)
2494 0 : group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2495 : }
2496 12 : p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2497 24 : if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2498 12 : (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2499 0 : p2p_buf_add_p2p_interface(tmp, p2p);
2500 12 : p2p_buf_update_ie_hdr(tmp, lpos);
2501 :
2502 12 : tmplen = wpabuf_len(tmp);
2503 12 : if (tmplen > len)
2504 0 : res = -1;
2505 : else {
2506 12 : os_memcpy(buf, wpabuf_head(tmp), tmplen);
2507 12 : res = tmplen;
2508 : }
2509 12 : wpabuf_free(tmp);
2510 :
2511 12 : return res;
2512 : }
2513 :
2514 :
2515 2420 : int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2516 : size_t len, int p2p_group, struct wpabuf *p2p_ie)
2517 : {
2518 : struct wpabuf *tmp;
2519 : u8 *lpos;
2520 : struct p2p_device *peer;
2521 : size_t tmplen;
2522 : int res;
2523 2420 : size_t extra = 0;
2524 :
2525 2420 : if (!p2p_group)
2526 2059 : return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2527 :
2528 : #ifdef CONFIG_WIFI_DISPLAY
2529 361 : if (p2p->wfd_ie_assoc_req)
2530 14 : extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2531 : #endif /* CONFIG_WIFI_DISPLAY */
2532 :
2533 361 : if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2534 0 : extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2535 :
2536 : /*
2537 : * (Re)Association Request - P2P IE
2538 : * P2P Capability attribute (shall be present)
2539 : * Extended Listen Timing (may be present)
2540 : * P2P Device Info attribute (shall be present)
2541 : */
2542 361 : tmp = wpabuf_alloc(200 + extra);
2543 361 : if (tmp == NULL)
2544 0 : return -1;
2545 :
2546 : #ifdef CONFIG_WIFI_DISPLAY
2547 361 : if (p2p->wfd_ie_assoc_req)
2548 14 : wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2549 : #endif /* CONFIG_WIFI_DISPLAY */
2550 :
2551 361 : if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2552 0 : wpabuf_put_buf(tmp,
2553 0 : p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2554 :
2555 361 : peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2556 :
2557 361 : lpos = p2p_buf_add_ie_hdr(tmp);
2558 361 : p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2559 361 : if (p2p->ext_listen_interval)
2560 2 : p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2561 2 : p2p->ext_listen_interval);
2562 361 : p2p_buf_add_device_info(tmp, p2p, peer);
2563 361 : p2p_buf_update_ie_hdr(tmp, lpos);
2564 :
2565 361 : tmplen = wpabuf_len(tmp);
2566 361 : if (tmplen > len)
2567 0 : res = -1;
2568 : else {
2569 361 : os_memcpy(buf, wpabuf_head(tmp), tmplen);
2570 361 : res = tmplen;
2571 : }
2572 361 : wpabuf_free(tmp);
2573 :
2574 361 : return res;
2575 : }
2576 :
2577 :
2578 398 : int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2579 : {
2580 : struct wpabuf *p2p_ie;
2581 : int ret;
2582 :
2583 398 : p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2584 398 : if (p2p_ie == NULL)
2585 391 : return 0;
2586 :
2587 7 : ret = p2p_attr_text(p2p_ie, buf, end);
2588 7 : wpabuf_free(p2p_ie);
2589 7 : return ret;
2590 : }
2591 :
2592 :
2593 : struct p2ps_advertisement *
2594 43 : p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id)
2595 : {
2596 : struct p2ps_advertisement *adv_data;
2597 :
2598 43 : if (!p2p)
2599 0 : return NULL;
2600 :
2601 43 : adv_data = p2p->p2ps_adv_list;
2602 95 : while (adv_data) {
2603 26 : if (adv_data->id == adv_id)
2604 17 : return adv_data;
2605 9 : adv_data = adv_data->next;
2606 : }
2607 :
2608 26 : return NULL;
2609 : }
2610 :
2611 :
2612 23 : int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id)
2613 : {
2614 : struct p2ps_advertisement *adv_data;
2615 : struct p2ps_advertisement **prior;
2616 :
2617 23 : if (!p2p)
2618 0 : return -1;
2619 :
2620 23 : adv_data = p2p->p2ps_adv_list;
2621 23 : prior = &p2p->p2ps_adv_list;
2622 52 : while (adv_data) {
2623 29 : if (adv_data->id == adv_id) {
2624 23 : p2p_dbg(p2p, "Delete ASP adv_id=0x%x", adv_id);
2625 23 : *prior = adv_data->next;
2626 23 : os_free(adv_data);
2627 23 : return 0;
2628 : }
2629 6 : prior = &adv_data->next;
2630 6 : adv_data = adv_data->next;
2631 : }
2632 :
2633 0 : return -1;
2634 : }
2635 :
2636 :
2637 28 : int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id,
2638 : const char *adv_str, u8 svc_state, u16 config_methods,
2639 : const char *svc_info)
2640 : {
2641 : struct p2ps_advertisement *adv_data, *tmp, **prev;
2642 : u8 buf[P2PS_HASH_LEN];
2643 28 : size_t adv_data_len, adv_len, info_len = 0;
2644 :
2645 28 : if (!p2p || !adv_str || !adv_str[0])
2646 0 : return -1;
2647 :
2648 28 : if (!(config_methods & p2p->cfg->config_methods)) {
2649 0 : p2p_dbg(p2p, "Config methods not supported svc: 0x%x dev: 0x%x",
2650 0 : config_methods, p2p->cfg->config_methods);
2651 0 : return -1;
2652 : }
2653 :
2654 28 : if (!p2ps_gen_hash(p2p, adv_str, buf))
2655 0 : return -1;
2656 :
2657 28 : if (svc_info)
2658 28 : info_len = os_strlen(svc_info);
2659 28 : adv_len = os_strlen(adv_str);
2660 28 : adv_data_len = sizeof(struct p2ps_advertisement) + adv_len + 1 +
2661 : info_len + 1;
2662 :
2663 28 : adv_data = os_zalloc(adv_data_len);
2664 28 : if (!adv_data)
2665 0 : return -1;
2666 :
2667 28 : os_memcpy(adv_data->hash, buf, P2PS_HASH_LEN);
2668 28 : adv_data->id = adv_id;
2669 28 : adv_data->state = svc_state;
2670 28 : adv_data->config_methods = config_methods & p2p->cfg->config_methods;
2671 28 : adv_data->auto_accept = (u8) auto_accept;
2672 28 : os_memcpy(adv_data->svc_name, adv_str, adv_len);
2673 :
2674 28 : if (svc_info && info_len) {
2675 28 : adv_data->svc_info = &adv_data->svc_name[adv_len + 1];
2676 28 : os_memcpy(adv_data->svc_info, svc_info, info_len);
2677 : }
2678 :
2679 : /*
2680 : * Group Advertisements by service string. They do not need to be
2681 : * sorted, but groups allow easier Probe Response instance grouping
2682 : */
2683 28 : tmp = p2p->p2ps_adv_list;
2684 28 : prev = &p2p->p2ps_adv_list;
2685 65 : while (tmp) {
2686 11 : if (tmp->id == adv_data->id) {
2687 2 : if (os_strcmp(tmp->svc_name, adv_data->svc_name) != 0) {
2688 1 : os_free(adv_data);
2689 1 : return -1;
2690 : }
2691 1 : adv_data->next = tmp->next;
2692 1 : *prev = adv_data;
2693 1 : os_free(tmp);
2694 1 : goto inserted;
2695 : } else {
2696 9 : if (os_strcmp(tmp->svc_name, adv_data->svc_name) == 0) {
2697 0 : adv_data->next = tmp->next;
2698 0 : tmp->next = adv_data;
2699 0 : goto inserted;
2700 : }
2701 : }
2702 9 : prev = &tmp->next;
2703 9 : tmp = tmp->next;
2704 : }
2705 :
2706 : /* No svc_name match found */
2707 26 : adv_data->next = p2p->p2ps_adv_list;
2708 26 : p2p->p2ps_adv_list = adv_data;
2709 :
2710 : inserted:
2711 54 : p2p_dbg(p2p,
2712 : "Added ASP advertisement adv_id=0x%x config_methods=0x%x svc_state=0x%x adv_str='%s'",
2713 27 : adv_id, adv_data->config_methods, svc_state, adv_str);
2714 :
2715 27 : return 0;
2716 : }
2717 :
2718 :
2719 192 : int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2720 : {
2721 : struct p2p_message msg;
2722 :
2723 192 : os_memset(&msg, 0, sizeof(msg));
2724 192 : if (p2p_parse_p2p_ie(p2p_ie, &msg))
2725 0 : return -1;
2726 :
2727 192 : if (msg.p2p_device_addr) {
2728 191 : os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2729 191 : return 0;
2730 1 : } else if (msg.device_id) {
2731 0 : os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2732 0 : return 0;
2733 : }
2734 1 : return -1;
2735 : }
2736 :
2737 :
2738 23 : int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2739 : {
2740 : struct wpabuf *p2p_ie;
2741 : int ret;
2742 :
2743 23 : p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2744 : P2P_IE_VENDOR_TYPE);
2745 23 : if (p2p_ie == NULL)
2746 4 : return -1;
2747 19 : ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2748 19 : wpabuf_free(p2p_ie);
2749 19 : return ret;
2750 : }
2751 :
2752 :
2753 198 : static void p2p_clear_go_neg(struct p2p_data *p2p)
2754 : {
2755 198 : p2p->go_neg_peer = NULL;
2756 198 : p2p_clear_timeout(p2p);
2757 198 : p2p_set_state(p2p, P2P_IDLE);
2758 198 : }
2759 :
2760 :
2761 250 : void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2762 : {
2763 250 : if (p2p->go_neg_peer == NULL) {
2764 58 : p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2765 58 : return; /* No pending Group Formation */
2766 : }
2767 :
2768 192 : if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2769 : 0) {
2770 0 : p2p_dbg(p2p, "Ignore WPS registration success notification for "
2771 : MACSTR " (GO Negotiation peer " MACSTR ")",
2772 0 : MAC2STR(mac_addr),
2773 0 : MAC2STR(p2p->go_neg_peer->intended_addr));
2774 0 : return; /* Ignore unexpected peer address */
2775 : }
2776 :
2777 1152 : p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2778 1152 : MAC2STR(mac_addr));
2779 :
2780 192 : p2p_clear_go_neg(p2p);
2781 : }
2782 :
2783 :
2784 12 : void p2p_group_formation_failed(struct p2p_data *p2p)
2785 : {
2786 12 : if (p2p->go_neg_peer == NULL) {
2787 6 : p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2788 18 : return; /* No pending Group Formation */
2789 : }
2790 :
2791 36 : p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2792 36 : MAC2STR(p2p->go_neg_peer->intended_addr));
2793 :
2794 6 : p2p_clear_go_neg(p2p);
2795 : }
2796 :
2797 :
2798 80 : struct p2p_data * p2p_init(const struct p2p_config *cfg)
2799 : {
2800 : struct p2p_data *p2p;
2801 :
2802 160 : if (cfg->max_peers < 1 ||
2803 160 : cfg->passphrase_len < 8 || cfg->passphrase_len > 63)
2804 0 : return NULL;
2805 :
2806 80 : p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2807 80 : if (p2p == NULL)
2808 0 : return NULL;
2809 80 : p2p->cfg = (struct p2p_config *) (p2p + 1);
2810 80 : os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2811 80 : if (cfg->dev_name)
2812 17 : p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2813 80 : if (cfg->manufacturer)
2814 0 : p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2815 80 : if (cfg->model_name)
2816 0 : p2p->cfg->model_name = os_strdup(cfg->model_name);
2817 80 : if (cfg->model_number)
2818 0 : p2p->cfg->model_number = os_strdup(cfg->model_number);
2819 80 : if (cfg->serial_number)
2820 0 : p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2821 80 : if (cfg->pref_chan) {
2822 0 : p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2823 : sizeof(struct p2p_channel));
2824 0 : if (p2p->cfg->pref_chan) {
2825 0 : os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2826 : cfg->num_pref_chan *
2827 : sizeof(struct p2p_channel));
2828 : } else
2829 0 : p2p->cfg->num_pref_chan = 0;
2830 : }
2831 :
2832 80 : p2ps_gen_hash(p2p, P2PS_WILD_HASH_STR, p2p->wild_card_hash);
2833 :
2834 80 : p2p->min_disc_int = 1;
2835 80 : p2p->max_disc_int = 3;
2836 80 : p2p->max_disc_tu = -1;
2837 :
2838 80 : if (os_get_random(&p2p->next_tie_breaker, 1) < 0)
2839 0 : p2p->next_tie_breaker = 0;
2840 80 : p2p->next_tie_breaker &= 0x01;
2841 80 : if (cfg->sd_request)
2842 80 : p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2843 80 : p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2844 80 : if (cfg->concurrent_operations)
2845 80 : p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2846 80 : p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2847 :
2848 80 : dl_list_init(&p2p->devices);
2849 :
2850 80 : eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2851 : p2p_expiration_timeout, p2p, NULL);
2852 :
2853 80 : p2p->go_timeout = 100;
2854 80 : p2p->client_timeout = 20;
2855 80 : p2p->num_p2p_sd_queries = 0;
2856 :
2857 80 : p2p_dbg(p2p, "initialized");
2858 80 : p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2859 80 : p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2860 :
2861 80 : return p2p;
2862 : }
2863 :
2864 :
2865 80 : void p2p_deinit(struct p2p_data *p2p)
2866 : {
2867 : struct p2ps_advertisement *adv, *prev;
2868 :
2869 : #ifdef CONFIG_WIFI_DISPLAY
2870 80 : wpabuf_free(p2p->wfd_ie_beacon);
2871 80 : wpabuf_free(p2p->wfd_ie_probe_req);
2872 80 : wpabuf_free(p2p->wfd_ie_probe_resp);
2873 80 : wpabuf_free(p2p->wfd_ie_assoc_req);
2874 80 : wpabuf_free(p2p->wfd_ie_invitation);
2875 80 : wpabuf_free(p2p->wfd_ie_prov_disc_req);
2876 80 : wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2877 80 : wpabuf_free(p2p->wfd_ie_go_neg);
2878 80 : wpabuf_free(p2p->wfd_dev_info);
2879 80 : wpabuf_free(p2p->wfd_assoc_bssid);
2880 80 : wpabuf_free(p2p->wfd_coupled_sink_info);
2881 : #endif /* CONFIG_WIFI_DISPLAY */
2882 :
2883 80 : eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2884 80 : eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2885 80 : eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2886 80 : eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2887 80 : eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2888 80 : p2p_flush(p2p);
2889 80 : p2p_free_req_dev_types(p2p);
2890 80 : os_free(p2p->cfg->dev_name);
2891 80 : os_free(p2p->cfg->manufacturer);
2892 80 : os_free(p2p->cfg->model_name);
2893 80 : os_free(p2p->cfg->model_number);
2894 80 : os_free(p2p->cfg->serial_number);
2895 80 : os_free(p2p->cfg->pref_chan);
2896 80 : os_free(p2p->groups);
2897 80 : os_free(p2p->p2ps_prov);
2898 80 : wpabuf_free(p2p->sd_resp);
2899 80 : os_free(p2p->after_scan_tx);
2900 80 : p2p_remove_wps_vendor_extensions(p2p);
2901 80 : os_free(p2p->no_go_freq.range);
2902 :
2903 80 : adv = p2p->p2ps_adv_list;
2904 163 : while (adv) {
2905 3 : prev = adv;
2906 3 : adv = adv->next;
2907 3 : os_free(prev);
2908 : }
2909 :
2910 80 : os_free(p2p);
2911 80 : }
2912 :
2913 :
2914 3307 : void p2p_flush(struct p2p_data *p2p)
2915 : {
2916 : struct p2p_device *dev, *prev;
2917 3307 : p2p_stop_find(p2p);
2918 3854 : dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2919 : list) {
2920 547 : dl_list_del(&dev->list);
2921 547 : p2p_device_free(p2p, dev);
2922 : }
2923 3307 : p2p_free_sd_queries(p2p);
2924 3307 : os_free(p2p->after_scan_tx);
2925 3307 : p2p->after_scan_tx = NULL;
2926 3307 : }
2927 :
2928 :
2929 7 : int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2930 : {
2931 : struct p2p_device *dev;
2932 :
2933 7 : dev = p2p_get_device(p2p, addr);
2934 7 : if (dev == NULL)
2935 1 : return -1;
2936 :
2937 6 : p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
2938 :
2939 6 : if (p2p->go_neg_peer == dev) {
2940 5 : eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2941 5 : p2p->go_neg_peer = NULL;
2942 : }
2943 :
2944 6 : dev->wps_method = WPS_NOT_READY;
2945 6 : dev->oob_pw_id = 0;
2946 6 : dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2947 6 : dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2948 :
2949 : /* Check if after_scan_tx is for this peer. If so free it */
2950 6 : if (p2p->after_scan_tx &&
2951 0 : os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2952 0 : os_free(p2p->after_scan_tx);
2953 0 : p2p->after_scan_tx = NULL;
2954 : }
2955 :
2956 6 : return 0;
2957 : }
2958 :
2959 :
2960 18 : int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2961 : {
2962 18 : os_free(p2p->cfg->dev_name);
2963 18 : if (dev_name) {
2964 18 : p2p->cfg->dev_name = os_strdup(dev_name);
2965 18 : if (p2p->cfg->dev_name == NULL)
2966 0 : return -1;
2967 : } else
2968 0 : p2p->cfg->dev_name = NULL;
2969 18 : return 0;
2970 : }
2971 :
2972 :
2973 2 : int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2974 : {
2975 2 : os_free(p2p->cfg->manufacturer);
2976 2 : p2p->cfg->manufacturer = NULL;
2977 2 : if (manufacturer) {
2978 0 : p2p->cfg->manufacturer = os_strdup(manufacturer);
2979 0 : if (p2p->cfg->manufacturer == NULL)
2980 0 : return -1;
2981 : }
2982 :
2983 2 : return 0;
2984 : }
2985 :
2986 :
2987 2 : int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2988 : {
2989 2 : os_free(p2p->cfg->model_name);
2990 2 : p2p->cfg->model_name = NULL;
2991 2 : if (model_name) {
2992 0 : p2p->cfg->model_name = os_strdup(model_name);
2993 0 : if (p2p->cfg->model_name == NULL)
2994 0 : return -1;
2995 : }
2996 :
2997 2 : return 0;
2998 : }
2999 :
3000 :
3001 2 : int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
3002 : {
3003 2 : os_free(p2p->cfg->model_number);
3004 2 : p2p->cfg->model_number = NULL;
3005 2 : if (model_number) {
3006 0 : p2p->cfg->model_number = os_strdup(model_number);
3007 0 : if (p2p->cfg->model_number == NULL)
3008 0 : return -1;
3009 : }
3010 :
3011 2 : return 0;
3012 : }
3013 :
3014 :
3015 2 : int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
3016 : {
3017 2 : os_free(p2p->cfg->serial_number);
3018 2 : p2p->cfg->serial_number = NULL;
3019 2 : if (serial_number) {
3020 0 : p2p->cfg->serial_number = os_strdup(serial_number);
3021 0 : if (p2p->cfg->serial_number == NULL)
3022 0 : return -1;
3023 : }
3024 :
3025 2 : return 0;
3026 : }
3027 :
3028 :
3029 6 : void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
3030 : {
3031 6 : p2p->cfg->config_methods = config_methods;
3032 6 : }
3033 :
3034 :
3035 2 : void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
3036 : {
3037 2 : os_memcpy(p2p->cfg->uuid, uuid, 16);
3038 2 : }
3039 :
3040 :
3041 3 : int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
3042 : {
3043 3 : os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
3044 3 : return 0;
3045 : }
3046 :
3047 :
3048 6 : int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
3049 : size_t num_dev_types)
3050 : {
3051 6 : if (num_dev_types > P2P_SEC_DEVICE_TYPES)
3052 0 : num_dev_types = P2P_SEC_DEVICE_TYPES;
3053 6 : p2p->cfg->num_sec_dev_types = num_dev_types;
3054 6 : os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
3055 6 : return 0;
3056 : }
3057 :
3058 :
3059 84 : void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
3060 : {
3061 : int i;
3062 :
3063 924 : for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3064 840 : wpabuf_free(p2p->wps_vendor_ext[i]);
3065 840 : p2p->wps_vendor_ext[i] = NULL;
3066 : }
3067 84 : }
3068 :
3069 :
3070 1 : int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
3071 : const struct wpabuf *vendor_ext)
3072 : {
3073 : int i;
3074 :
3075 1 : if (vendor_ext == NULL)
3076 0 : return -1;
3077 :
3078 1 : for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3079 1 : if (p2p->wps_vendor_ext[i] == NULL)
3080 1 : break;
3081 : }
3082 1 : if (i >= P2P_MAX_WPS_VENDOR_EXT)
3083 0 : return -1;
3084 :
3085 1 : p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
3086 1 : if (p2p->wps_vendor_ext[i] == NULL)
3087 0 : return -1;
3088 :
3089 1 : return 0;
3090 : }
3091 :
3092 :
3093 3 : int p2p_set_country(struct p2p_data *p2p, const char *country)
3094 : {
3095 3 : os_memcpy(p2p->cfg->country, country, 3);
3096 3 : return 0;
3097 : }
3098 :
3099 :
3100 944 : static int p2p_pre_find_operation(struct p2p_data *p2p, struct p2p_device *dev)
3101 : {
3102 944 : if (dev->sd_pending_bcast_queries == 0) {
3103 : /* Initialize with total number of registered broadcast
3104 : * SD queries. */
3105 893 : dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
3106 : }
3107 :
3108 944 : if (p2p_start_sd(p2p, dev) == 0)
3109 60 : return 1;
3110 :
3111 884 : if (dev->req_config_methods &&
3112 0 : !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
3113 0 : p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3114 : MACSTR " (config methods 0x%x)",
3115 0 : MAC2STR(dev->info.p2p_device_addr),
3116 0 : dev->req_config_methods);
3117 0 : if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
3118 0 : return 1;
3119 : }
3120 :
3121 884 : return 0;
3122 : }
3123 :
3124 :
3125 772 : void p2p_continue_find(struct p2p_data *p2p)
3126 : {
3127 : struct p2p_device *dev;
3128 : int found;
3129 :
3130 772 : p2p_set_state(p2p, P2P_SEARCH);
3131 :
3132 : /* Continue from the device following the last iteration */
3133 772 : found = 0;
3134 1722 : dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3135 955 : if (dev == p2p->last_p2p_find_oper) {
3136 107 : found = 1;
3137 107 : continue;
3138 : }
3139 848 : if (!found)
3140 842 : continue;
3141 6 : if (p2p_pre_find_operation(p2p, dev) > 0) {
3142 5 : p2p->last_p2p_find_oper = dev;
3143 5 : return;
3144 : }
3145 : }
3146 :
3147 : /*
3148 : * Wrap around to the beginning of the list and continue until the last
3149 : * iteration device.
3150 : */
3151 1581 : dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3152 938 : if (p2p_pre_find_operation(p2p, dev) > 0) {
3153 55 : p2p->last_p2p_find_oper = dev;
3154 55 : return;
3155 : }
3156 883 : if (dev == p2p->last_p2p_find_oper)
3157 69 : break;
3158 : }
3159 :
3160 712 : p2p_listen_in_find(p2p, 1);
3161 : }
3162 :
3163 :
3164 60 : static void p2p_sd_cb(struct p2p_data *p2p, int success)
3165 : {
3166 60 : p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
3167 : success);
3168 60 : p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3169 :
3170 60 : if (!success) {
3171 0 : if (p2p->sd_peer)
3172 0 : p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3173 0 : p2p->sd_peer = NULL;
3174 0 : p2p_continue_find(p2p);
3175 0 : return;
3176 : }
3177 :
3178 60 : if (p2p->sd_peer == NULL) {
3179 0 : p2p_dbg(p2p, "No SD peer entry known");
3180 0 : p2p_continue_find(p2p);
3181 0 : return;
3182 : }
3183 :
3184 60 : if (p2p->sd_query && p2p->sd_query->for_all_peers) {
3185 : /* Update the pending broadcast SD query count for this device
3186 : */
3187 41 : p2p->sd_peer->sd_pending_bcast_queries--;
3188 :
3189 : /*
3190 : * If there are no pending broadcast queries for this device,
3191 : * mark it as done (-1).
3192 : */
3193 41 : if (p2p->sd_peer->sd_pending_bcast_queries == 0)
3194 38 : p2p->sd_peer->sd_pending_bcast_queries = -1;
3195 : }
3196 :
3197 : /* Wait for response from the peer */
3198 60 : p2p_set_state(p2p, P2P_SD_DURING_FIND);
3199 60 : p2p_set_timeout(p2p, 0, 200000);
3200 : }
3201 :
3202 :
3203 : /**
3204 : * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
3205 : * @p2p: P2P module context from p2p_init()
3206 : */
3207 120 : static void p2p_retry_pd(struct p2p_data *p2p)
3208 : {
3209 : struct p2p_device *dev;
3210 :
3211 : /*
3212 : * Retry the prov disc req attempt only for the peer that the user had
3213 : * requested.
3214 : */
3215 :
3216 120 : dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3217 120 : if (os_memcmp(p2p->pending_pd_devaddr,
3218 : dev->info.p2p_device_addr, ETH_ALEN) != 0)
3219 0 : continue;
3220 120 : if (!dev->req_config_methods)
3221 0 : continue;
3222 :
3223 840 : p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3224 : MACSTR " (config methods 0x%x)",
3225 720 : MAC2STR(dev->info.p2p_device_addr),
3226 120 : dev->req_config_methods);
3227 240 : p2p_send_prov_disc_req(p2p, dev,
3228 120 : dev->flags & P2P_DEV_PD_FOR_JOIN,
3229 : p2p->pd_force_freq);
3230 240 : return;
3231 : }
3232 : }
3233 :
3234 :
3235 199 : static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
3236 : {
3237 199 : p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
3238 : success);
3239 :
3240 : /*
3241 : * Postpone resetting the pending action state till after we actually
3242 : * time out. This allows us to take some action like notifying any
3243 : * interested parties about no response to the request.
3244 : *
3245 : * When the timer (below) goes off we check in IDLE, SEARCH, or
3246 : * LISTEN_ONLY state, which are the only allowed states to issue a PD
3247 : * requests in, if this was still pending and then raise notification.
3248 : */
3249 :
3250 199 : if (!success) {
3251 121 : p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3252 :
3253 242 : if (p2p->user_initiated_pd &&
3254 242 : (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
3255 : {
3256 : /* Retry request from timeout to avoid busy loops */
3257 0 : p2p->pending_action_state = P2P_PENDING_PD;
3258 0 : p2p_set_timeout(p2p, 0, 50000);
3259 121 : } else if (p2p->state != P2P_IDLE)
3260 0 : p2p_continue_find(p2p);
3261 121 : else if (p2p->user_initiated_pd) {
3262 121 : p2p->pending_action_state = P2P_PENDING_PD;
3263 121 : p2p_set_timeout(p2p, 0, 300000);
3264 : }
3265 320 : return;
3266 : }
3267 :
3268 : /*
3269 : * This postponing, of resetting pending_action_state, needs to be
3270 : * done only for user initiated PD requests and not internal ones.
3271 : */
3272 78 : if (p2p->user_initiated_pd)
3273 74 : p2p->pending_action_state = P2P_PENDING_PD;
3274 : else
3275 4 : p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3276 :
3277 : /* Wait for response from the peer */
3278 78 : if (p2p->state == P2P_SEARCH)
3279 19 : p2p_set_state(p2p, P2P_PD_DURING_FIND);
3280 78 : p2p_set_timeout(p2p, 0, 200000);
3281 : }
3282 :
3283 :
3284 192 : static int p2p_check_after_scan_tx_continuation(struct p2p_data *p2p)
3285 : {
3286 192 : if (p2p->after_scan_tx_in_progress) {
3287 1 : p2p->after_scan_tx_in_progress = 0;
3288 1 : if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
3289 0 : p2p_run_after_scan(p2p))
3290 0 : return 1;
3291 1 : if (p2p->state == P2P_SEARCH) {
3292 1 : p2p_dbg(p2p, "Continue find after after_scan_tx completion");
3293 1 : p2p_continue_find(p2p);
3294 : }
3295 : }
3296 :
3297 192 : return 0;
3298 : }
3299 :
3300 :
3301 81 : static void p2p_prov_disc_resp_cb(struct p2p_data *p2p, int success)
3302 : {
3303 81 : p2p_dbg(p2p, "Provision Discovery Response TX callback: success=%d",
3304 : success);
3305 :
3306 81 : if (p2p->send_action_in_progress) {
3307 81 : p2p->send_action_in_progress = 0;
3308 81 : p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3309 : }
3310 :
3311 81 : p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3312 :
3313 81 : if (!success)
3314 0 : goto continue_search;
3315 :
3316 162 : if (!p2p->cfg->prov_disc_resp_cb ||
3317 81 : p2p->cfg->prov_disc_resp_cb(p2p->cfg->cb_ctx) < 1)
3318 : goto continue_search;
3319 :
3320 2 : p2p_dbg(p2p,
3321 : "Post-Provision Discovery operations started - do not try to continue other P2P operations");
3322 83 : return;
3323 :
3324 : continue_search:
3325 79 : p2p_check_after_scan_tx_continuation(p2p);
3326 : }
3327 :
3328 :
3329 1456 : int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
3330 : struct os_reltime *rx_time, int level, const u8 *ies,
3331 : size_t ies_len)
3332 : {
3333 1456 : if (os_reltime_before(rx_time, &p2p->find_start)) {
3334 : /*
3335 : * The driver may have cached (e.g., in cfg80211 BSS table) the
3336 : * scan results for relatively long time. To avoid reporting
3337 : * stale information, update P2P peers only based on results
3338 : * that have based on frames received after the last p2p_find
3339 : * operation was started.
3340 : */
3341 3984 : p2p_dbg(p2p, "Ignore old scan result for " MACSTR
3342 : " (rx_time=%u.%06u)",
3343 3486 : MAC2STR(bssid), (unsigned int) rx_time->sec,
3344 498 : (unsigned int) rx_time->usec);
3345 498 : return 0;
3346 : }
3347 :
3348 958 : p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
3349 :
3350 958 : return 0;
3351 : }
3352 :
3353 :
3354 788 : void p2p_scan_res_handled(struct p2p_data *p2p)
3355 : {
3356 788 : if (!p2p->p2p_scan_running) {
3357 60 : p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
3358 : }
3359 788 : p2p->p2p_scan_running = 0;
3360 788 : eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
3361 :
3362 788 : if (p2p_run_after_scan(p2p))
3363 805 : return;
3364 771 : if (p2p->state == P2P_SEARCH)
3365 698 : p2p_continue_find(p2p);
3366 : }
3367 :
3368 :
3369 2723 : void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
3370 : {
3371 : u8 dev_capab;
3372 : u8 *len;
3373 :
3374 : #ifdef CONFIG_WIFI_DISPLAY
3375 2723 : if (p2p->wfd_ie_probe_req)
3376 42 : wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
3377 : #endif /* CONFIG_WIFI_DISPLAY */
3378 :
3379 2723 : if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3380 0 : wpabuf_put_buf(ies,
3381 0 : p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3382 :
3383 2723 : len = p2p_buf_add_ie_hdr(ies);
3384 :
3385 2723 : dev_capab = p2p->dev_capab & ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3386 :
3387 : /* P2PS requires Probe Request frames to include SD bit */
3388 2723 : if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3389 28 : dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
3390 :
3391 2723 : p2p_buf_add_capability(ies, dev_capab, 0);
3392 :
3393 2723 : if (dev_id)
3394 8 : p2p_buf_add_device_id(ies, dev_id);
3395 2723 : if (p2p->cfg->reg_class && p2p->cfg->channel)
3396 5446 : p2p_buf_add_listen_channel(ies, p2p->cfg->country,
3397 2723 : p2p->cfg->reg_class,
3398 2723 : p2p->cfg->channel);
3399 2723 : if (p2p->ext_listen_interval)
3400 3 : p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
3401 3 : p2p->ext_listen_interval);
3402 :
3403 2723 : if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3404 28 : p2p_buf_add_service_hash(ies, p2p);
3405 :
3406 : /* TODO: p2p_buf_add_operating_channel() if GO */
3407 2723 : p2p_buf_update_ie_hdr(ies, len);
3408 2723 : }
3409 :
3410 :
3411 2726 : size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
3412 : {
3413 2726 : size_t len = 100;
3414 :
3415 : #ifdef CONFIG_WIFI_DISPLAY
3416 2726 : if (p2p && p2p->wfd_ie_probe_req)
3417 42 : len += wpabuf_len(p2p->wfd_ie_probe_req);
3418 : #endif /* CONFIG_WIFI_DISPLAY */
3419 :
3420 3281 : if (p2p && p2p->vendor_elem &&
3421 555 : p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3422 0 : len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3423 :
3424 2726 : return len;
3425 : }
3426 :
3427 :
3428 0 : int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
3429 : {
3430 0 : return p2p_attr_text(p2p_ie, buf, end);
3431 : }
3432 :
3433 :
3434 200 : static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
3435 : {
3436 200 : struct p2p_device *dev = p2p->go_neg_peer;
3437 : int timeout;
3438 :
3439 200 : p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
3440 :
3441 200 : if (dev == NULL) {
3442 0 : p2p_dbg(p2p, "No pending GO Negotiation");
3443 0 : return;
3444 : }
3445 :
3446 200 : if (success) {
3447 157 : if (dev->flags & P2P_DEV_USER_REJECTED) {
3448 0 : p2p_set_state(p2p, P2P_IDLE);
3449 0 : return;
3450 : }
3451 43 : } else if (dev->go_neg_req_sent) {
3452 : /* Cancel the increment from p2p_connect_send() on failure */
3453 43 : dev->go_neg_req_sent--;
3454 : }
3455 :
3456 243 : if (!success &&
3457 51 : (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
3458 8 : !is_zero_ether_addr(dev->member_in_go_dev)) {
3459 48 : p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
3460 48 : MAC2STR(dev->info.p2p_device_addr));
3461 8 : p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3462 8 : p2p_send_dev_disc_req(p2p, dev);
3463 8 : return;
3464 : }
3465 :
3466 : /*
3467 : * Use P2P find, if needed, to find the other device from its listen
3468 : * channel.
3469 : */
3470 192 : p2p_set_state(p2p, P2P_CONNECT);
3471 192 : timeout = success ? 500000 : 100000;
3472 227 : if (!success && p2p->go_neg_peer &&
3473 35 : (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
3474 : unsigned int r;
3475 : /*
3476 : * Peer is expected to wait our response and we will skip the
3477 : * listen phase. Add some randomness to the wait time here to
3478 : * make it less likely to hit cases where we could end up in
3479 : * sync with peer not listening.
3480 : */
3481 10 : if (os_get_random((u8 *) &r, sizeof(r)) < 0)
3482 0 : r = 0;
3483 10 : timeout += r % 100000;
3484 : }
3485 192 : p2p_set_timeout(p2p, 0, timeout);
3486 : }
3487 :
3488 :
3489 100 : static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3490 : {
3491 100 : p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
3492 : success);
3493 100 : if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3494 0 : p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
3495 100 : return;
3496 : }
3497 100 : p2p_set_state(p2p, P2P_CONNECT);
3498 100 : p2p_set_timeout(p2p, 0, 500000);
3499 : }
3500 :
3501 :
3502 48 : static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
3503 : const u8 *addr)
3504 : {
3505 48 : p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
3506 48 : if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3507 1 : p2p_go_neg_failed(p2p, p2p->go_neg_peer->status);
3508 47 : } else if (success) {
3509 : struct p2p_device *dev;
3510 47 : dev = p2p_get_device(p2p, addr);
3511 87 : if (dev &&
3512 40 : dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
3513 26 : dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
3514 : }
3515 48 : }
3516 :
3517 :
3518 100 : static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3519 : enum p2p_send_action_result result)
3520 : {
3521 : struct p2p_device *dev;
3522 :
3523 100 : p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
3524 100 : if (result == P2P_SEND_ACTION_FAILED) {
3525 0 : p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3526 0 : p2p_go_neg_failed(p2p, -1);
3527 0 : return;
3528 : }
3529 :
3530 100 : dev = p2p->go_neg_peer;
3531 :
3532 100 : if (result == P2P_SEND_ACTION_NO_ACK) {
3533 : /*
3534 : * Retry GO Negotiation Confirmation
3535 : * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
3536 : * ACK for confirmation.
3537 : */
3538 0 : if (dev && dev->go_neg_conf &&
3539 0 : dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
3540 0 : p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
3541 0 : dev->go_neg_conf_sent);
3542 0 : p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
3543 0 : if (p2p_send_action(p2p, dev->go_neg_conf_freq,
3544 0 : dev->info.p2p_device_addr,
3545 0 : p2p->cfg->dev_addr,
3546 0 : dev->info.p2p_device_addr,
3547 0 : wpabuf_head(dev->go_neg_conf),
3548 0 : wpabuf_len(dev->go_neg_conf), 0) >=
3549 : 0) {
3550 0 : dev->go_neg_conf_sent++;
3551 0 : return;
3552 : }
3553 0 : p2p_dbg(p2p, "Failed to re-send Action frame");
3554 :
3555 : /*
3556 : * Continue with the assumption that the first attempt
3557 : * went through and just the ACK frame was lost.
3558 : */
3559 : }
3560 :
3561 : /*
3562 : * It looks like the TX status for GO Negotiation Confirm is
3563 : * often showing failure even when the peer has actually
3564 : * received the frame. Since the peer may change channels
3565 : * immediately after having received the frame, we may not see
3566 : * an Ack for retries, so just dropping a single frame may
3567 : * trigger this. To allow the group formation to succeed if the
3568 : * peer did indeed receive the frame, continue regardless of
3569 : * the TX status.
3570 : */
3571 0 : p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
3572 : }
3573 :
3574 100 : p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3575 :
3576 100 : if (dev == NULL)
3577 0 : return;
3578 :
3579 100 : p2p_go_complete(p2p, dev);
3580 : }
3581 :
3582 :
3583 1017 : void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3584 : const u8 *src, const u8 *bssid,
3585 : enum p2p_send_action_result result)
3586 : {
3587 : enum p2p_pending_action_state state;
3588 : int success;
3589 :
3590 20340 : p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
3591 : " src=" MACSTR " bssid=" MACSTR " result=%d p2p_state=%s)",
3592 13221 : p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3593 7119 : MAC2STR(bssid), result, p2p_state_txt(p2p->state));
3594 1017 : success = result == P2P_SEND_ACTION_SUCCESS;
3595 1017 : state = p2p->pending_action_state;
3596 1017 : p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3597 1017 : switch (state) {
3598 : case P2P_NO_PENDING_ACTION:
3599 113 : if (p2p->send_action_in_progress) {
3600 0 : p2p->send_action_in_progress = 0;
3601 0 : p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3602 : }
3603 113 : p2p_check_after_scan_tx_continuation(p2p);
3604 113 : break;
3605 : case P2P_PENDING_GO_NEG_REQUEST:
3606 200 : p2p_go_neg_req_cb(p2p, success);
3607 200 : break;
3608 : case P2P_PENDING_GO_NEG_RESPONSE:
3609 100 : p2p_go_neg_resp_cb(p2p, success);
3610 100 : break;
3611 : case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3612 48 : p2p_go_neg_resp_failure_cb(p2p, success, dst);
3613 48 : break;
3614 : case P2P_PENDING_GO_NEG_CONFIRM:
3615 100 : p2p_go_neg_conf_cb(p2p, result);
3616 100 : break;
3617 : case P2P_PENDING_SD:
3618 60 : p2p_sd_cb(p2p, success);
3619 60 : break;
3620 : case P2P_PENDING_PD:
3621 199 : p2p_prov_disc_cb(p2p, success);
3622 199 : break;
3623 : case P2P_PENDING_PD_RESPONSE:
3624 81 : p2p_prov_disc_resp_cb(p2p, success);
3625 81 : break;
3626 : case P2P_PENDING_INVITATION_REQUEST:
3627 47 : p2p_invitation_req_cb(p2p, success);
3628 47 : break;
3629 : case P2P_PENDING_INVITATION_RESPONSE:
3630 53 : p2p_invitation_resp_cb(p2p, success);
3631 53 : break;
3632 : case P2P_PENDING_DEV_DISC_REQUEST:
3633 8 : p2p_dev_disc_req_cb(p2p, success);
3634 8 : break;
3635 : case P2P_PENDING_DEV_DISC_RESPONSE:
3636 8 : p2p_dev_disc_resp_cb(p2p, success);
3637 8 : break;
3638 : case P2P_PENDING_GO_DISC_REQ:
3639 0 : p2p_go_disc_req_cb(p2p, success);
3640 0 : break;
3641 : }
3642 :
3643 1017 : p2p->after_scan_tx_in_progress = 0;
3644 1017 : }
3645 :
3646 :
3647 1514 : void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3648 : unsigned int duration)
3649 : {
3650 1514 : if (freq == p2p->pending_client_disc_freq) {
3651 0 : p2p_dbg(p2p, "Client discoverability remain-awake completed");
3652 0 : p2p->pending_client_disc_freq = 0;
3653 0 : return;
3654 : }
3655 :
3656 1514 : if (freq != p2p->pending_listen_freq) {
3657 24 : p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3658 : freq, duration, p2p->pending_listen_freq);
3659 24 : return;
3660 : }
3661 :
3662 1490 : p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3663 : p2p->pending_listen_sec, p2p->pending_listen_usec,
3664 : p2p->pending_listen_freq);
3665 1490 : p2p->in_listen = 1;
3666 1490 : p2p->drv_in_listen = freq;
3667 1490 : if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3668 : /*
3669 : * Add 20 msec extra wait to avoid race condition with driver
3670 : * remain-on-channel end event, i.e., give driver more time to
3671 : * complete the operation before our timeout expires.
3672 : */
3673 1490 : p2p_set_timeout(p2p, p2p->pending_listen_sec,
3674 1490 : p2p->pending_listen_usec + 20000);
3675 : }
3676 :
3677 1490 : p2p->pending_listen_freq = 0;
3678 : }
3679 :
3680 :
3681 1429 : int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3682 : {
3683 1429 : p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3684 1429 : p2p->drv_in_listen = 0;
3685 1429 : if (p2p->in_listen)
3686 1021 : return 0; /* Internal timeout will trigger the next step */
3687 :
3688 408 : if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3689 0 : if (p2p->go_neg_peer->connect_reqs >= 120) {
3690 0 : p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3691 0 : p2p_go_neg_failed(p2p, -1);
3692 0 : return 0;
3693 : }
3694 :
3695 0 : p2p_set_state(p2p, P2P_CONNECT);
3696 0 : p2p_connect_send(p2p, p2p->go_neg_peer);
3697 0 : return 1;
3698 408 : } else if (p2p->state == P2P_SEARCH) {
3699 5 : if (p2p->p2p_scan_running) {
3700 : /*
3701 : * Search is already in progress. This can happen if
3702 : * an Action frame RX is reported immediately after
3703 : * the end of a remain-on-channel operation and the
3704 : * response frame to that is sent using an offchannel
3705 : * operation while in p2p_find. Avoid an attempt to
3706 : * restart a scan here.
3707 : */
3708 0 : p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3709 0 : return 1;
3710 : }
3711 5 : if (p2p->pending_listen_freq) {
3712 : /*
3713 : * Better wait a bit if the driver is unable to start
3714 : * offchannel operation for some reason. p2p_search()
3715 : * will be started from internal timeout.
3716 : */
3717 0 : p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3718 0 : p2p_set_timeout(p2p, 0, 100000);
3719 0 : return 1;
3720 : }
3721 5 : if (p2p->search_delay) {
3722 0 : p2p_dbg(p2p, "Delay search operation by %u ms",
3723 : p2p->search_delay);
3724 0 : p2p_set_timeout(p2p, p2p->search_delay / 1000,
3725 0 : (p2p->search_delay % 1000) * 1000);
3726 0 : return 1;
3727 : }
3728 5 : p2p_search(p2p);
3729 5 : return 1;
3730 : }
3731 :
3732 403 : return 0;
3733 : }
3734 :
3735 :
3736 50 : static void p2p_timeout_connect(struct p2p_data *p2p)
3737 : {
3738 50 : p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3739 100 : if (p2p->go_neg_peer &&
3740 50 : (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3741 0 : p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3742 0 : p2p_go_neg_failed(p2p, -1);
3743 0 : return;
3744 : }
3745 100 : if (p2p->go_neg_peer &&
3746 64 : (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3747 14 : p2p->go_neg_peer->connect_reqs < 120) {
3748 14 : p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3749 14 : p2p_connect_send(p2p, p2p->go_neg_peer);
3750 14 : return;
3751 : }
3752 36 : if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3753 0 : p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3754 0 : p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3755 0 : p2p_set_timeout(p2p, 0, 30000);
3756 0 : return;
3757 : }
3758 36 : p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3759 36 : p2p_listen_in_find(p2p, 0);
3760 : }
3761 :
3762 :
3763 34 : static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3764 : {
3765 34 : if (p2p->go_neg_peer) {
3766 34 : if (p2p->drv_in_listen) {
3767 0 : p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3768 0 : return;
3769 : }
3770 :
3771 34 : if (p2p->go_neg_peer->connect_reqs >= 120) {
3772 0 : p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3773 0 : p2p_go_neg_failed(p2p, -1);
3774 0 : return;
3775 : }
3776 :
3777 34 : p2p_set_state(p2p, P2P_CONNECT);
3778 34 : p2p_connect_send(p2p, p2p->go_neg_peer);
3779 : } else
3780 0 : p2p_set_state(p2p, P2P_IDLE);
3781 : }
3782 :
3783 :
3784 355 : static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3785 : {
3786 355 : p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3787 :
3788 710 : if (p2p->cfg->is_concurrent_session_active &&
3789 355 : p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3790 0 : p2p_set_timeout(p2p, 0, 500000);
3791 : else
3792 355 : p2p_set_timeout(p2p, 0, 200000);
3793 355 : }
3794 :
3795 :
3796 384 : static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3797 : {
3798 384 : struct p2p_device *dev = p2p->go_neg_peer;
3799 :
3800 384 : if (dev == NULL) {
3801 0 : p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3802 384 : return;
3803 : }
3804 :
3805 384 : p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3806 384 : p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3807 384 : p2p_listen_in_find(p2p, 0);
3808 : }
3809 :
3810 :
3811 0 : static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3812 : {
3813 0 : p2p_dbg(p2p, "Service Discovery Query timeout");
3814 0 : if (p2p->sd_peer) {
3815 0 : p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3816 0 : p2p->sd_peer = NULL;
3817 : }
3818 0 : p2p_continue_find(p2p);
3819 0 : }
3820 :
3821 :
3822 0 : static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3823 : {
3824 0 : p2p_dbg(p2p, "Provision Discovery Request timeout");
3825 0 : p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3826 0 : p2p_continue_find(p2p);
3827 0 : }
3828 :
3829 :
3830 121 : static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3831 : {
3832 121 : u32 adv_id = 0;
3833 121 : u8 *adv_mac = NULL;
3834 :
3835 121 : p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3836 :
3837 : /*
3838 : * For user initiated PD requests that we have not gotten any responses
3839 : * for while in IDLE state, we retry them a couple of times before
3840 : * giving up.
3841 : */
3842 121 : if (!p2p->user_initiated_pd)
3843 121 : return;
3844 :
3845 121 : p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
3846 :
3847 121 : if (p2p->pd_retries) {
3848 120 : p2p->pd_retries--;
3849 120 : p2p_retry_pd(p2p);
3850 : } else {
3851 : struct p2p_device *dev;
3852 1 : int for_join = 0;
3853 :
3854 2 : dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3855 1 : if (os_memcmp(p2p->pending_pd_devaddr,
3856 : dev->info.p2p_device_addr, ETH_ALEN) != 0)
3857 0 : continue;
3858 2 : if (dev->req_config_methods &&
3859 1 : (dev->flags & P2P_DEV_PD_FOR_JOIN))
3860 0 : for_join = 1;
3861 : }
3862 :
3863 1 : if (p2p->p2ps_prov) {
3864 0 : adv_id = p2p->p2ps_prov->adv_id;
3865 0 : adv_mac = p2p->p2ps_prov->adv_mac;
3866 : }
3867 :
3868 1 : if (p2p->cfg->prov_disc_fail)
3869 2 : p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3870 1 : p2p->pending_pd_devaddr,
3871 : for_join ?
3872 : P2P_PROV_DISC_TIMEOUT_JOIN :
3873 : P2P_PROV_DISC_TIMEOUT,
3874 : adv_id, adv_mac, NULL);
3875 1 : p2p_reset_pending_pd(p2p);
3876 : }
3877 : }
3878 :
3879 :
3880 1 : static void p2p_timeout_invite(struct p2p_data *p2p)
3881 : {
3882 1 : p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3883 1 : p2p_set_state(p2p, P2P_INVITE_LISTEN);
3884 1 : if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3885 : /*
3886 : * Better remain on operating channel instead of listen channel
3887 : * when running a group.
3888 : */
3889 0 : p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
3890 0 : p2p_set_timeout(p2p, 0, 100000);
3891 1 : return;
3892 : }
3893 1 : p2p_listen_in_find(p2p, 0);
3894 : }
3895 :
3896 :
3897 1 : static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3898 : {
3899 1 : if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3900 1 : p2p_set_state(p2p, P2P_INVITE);
3901 1 : p2p_invite_send(p2p, p2p->invite_peer,
3902 : p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
3903 : } else {
3904 0 : if (p2p->invite_peer) {
3905 0 : p2p_dbg(p2p, "Invitation Request retry limit reached");
3906 0 : if (p2p->cfg->invitation_result)
3907 0 : p2p->cfg->invitation_result(
3908 0 : p2p->cfg->cb_ctx, -1, NULL, NULL,
3909 0 : p2p->invite_peer->info.p2p_device_addr,
3910 : 0, 0);
3911 : }
3912 0 : p2p_set_state(p2p, P2P_IDLE);
3913 : }
3914 1 : }
3915 :
3916 :
3917 1423 : static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3918 : {
3919 1423 : struct p2p_data *p2p = eloop_ctx;
3920 :
3921 1423 : p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
3922 :
3923 1423 : p2p->in_listen = 0;
3924 1423 : if (p2p->drv_in_listen) {
3925 30 : p2p_dbg(p2p, "Driver is still in listen state - stop it");
3926 30 : p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
3927 : }
3928 :
3929 1423 : switch (p2p->state) {
3930 : case P2P_IDLE:
3931 : /* Check if we timed out waiting for PD req */
3932 169 : if (p2p->pending_action_state == P2P_PENDING_PD)
3933 121 : p2p_timeout_prov_disc_req(p2p);
3934 169 : break;
3935 : case P2P_SEARCH:
3936 : /* Check if we timed out waiting for PD req */
3937 407 : if (p2p->pending_action_state == P2P_PENDING_PD)
3938 0 : p2p_timeout_prov_disc_req(p2p);
3939 407 : if (p2p->search_delay && !p2p->in_search_delay) {
3940 8 : p2p_dbg(p2p, "Delay search operation by %u ms",
3941 : p2p->search_delay);
3942 8 : p2p->in_search_delay = 1;
3943 8 : p2p_set_timeout(p2p, p2p->search_delay / 1000,
3944 8 : (p2p->search_delay % 1000) * 1000);
3945 8 : break;
3946 : }
3947 399 : p2p->in_search_delay = 0;
3948 399 : p2p_search(p2p);
3949 399 : break;
3950 : case P2P_CONNECT:
3951 50 : p2p_timeout_connect(p2p);
3952 50 : break;
3953 : case P2P_CONNECT_LISTEN:
3954 34 : p2p_timeout_connect_listen(p2p);
3955 34 : break;
3956 : case P2P_GO_NEG:
3957 0 : break;
3958 : case P2P_LISTEN_ONLY:
3959 : /* Check if we timed out waiting for PD req */
3960 22 : if (p2p->pending_action_state == P2P_PENDING_PD)
3961 0 : p2p_timeout_prov_disc_req(p2p);
3962 :
3963 22 : if (p2p->ext_listen_only) {
3964 0 : p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
3965 0 : p2p->ext_listen_only = 0;
3966 0 : p2p_set_state(p2p, P2P_IDLE);
3967 : }
3968 22 : break;
3969 : case P2P_WAIT_PEER_CONNECT:
3970 355 : p2p_timeout_wait_peer_connect(p2p);
3971 355 : break;
3972 : case P2P_WAIT_PEER_IDLE:
3973 384 : p2p_timeout_wait_peer_idle(p2p);
3974 384 : break;
3975 : case P2P_SD_DURING_FIND:
3976 0 : p2p_timeout_sd_during_find(p2p);
3977 0 : break;
3978 : case P2P_PROVISIONING:
3979 0 : break;
3980 : case P2P_PD_DURING_FIND:
3981 0 : p2p_timeout_prov_disc_during_find(p2p);
3982 0 : break;
3983 : case P2P_INVITE:
3984 1 : p2p_timeout_invite(p2p);
3985 1 : break;
3986 : case P2P_INVITE_LISTEN:
3987 1 : p2p_timeout_invite_listen(p2p);
3988 1 : break;
3989 : }
3990 1423 : }
3991 :
3992 :
3993 5 : int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3994 : {
3995 : struct p2p_device *dev;
3996 :
3997 5 : dev = p2p_get_device(p2p, peer_addr);
3998 30 : p2p_dbg(p2p, "Local request to reject connection attempts by peer "
3999 30 : MACSTR, MAC2STR(peer_addr));
4000 5 : if (dev == NULL) {
4001 2 : p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
4002 2 : return -1;
4003 : }
4004 3 : dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
4005 3 : dev->flags |= P2P_DEV_USER_REJECTED;
4006 3 : return 0;
4007 : }
4008 :
4009 :
4010 797 : const char * p2p_wps_method_text(enum p2p_wps_method method)
4011 : {
4012 797 : switch (method) {
4013 : case WPS_NOT_READY:
4014 500 : return "not-ready";
4015 : case WPS_PIN_DISPLAY:
4016 80 : return "Display";
4017 : case WPS_PIN_KEYPAD:
4018 130 : return "Keypad";
4019 : case WPS_PBC:
4020 57 : return "PBC";
4021 : case WPS_NFC:
4022 24 : return "NFC";
4023 : case WPS_P2PS:
4024 6 : return "P2PS";
4025 : }
4026 :
4027 0 : return "??";
4028 : }
4029 :
4030 :
4031 501 : static const char * p2p_go_state_text(enum p2p_go_state go_state)
4032 : {
4033 501 : switch (go_state) {
4034 : case UNKNOWN_GO:
4035 403 : return "unknown";
4036 : case LOCAL_GO:
4037 53 : return "local";
4038 : case REMOTE_GO:
4039 45 : return "remote";
4040 : }
4041 :
4042 0 : return "??";
4043 : }
4044 :
4045 :
4046 932 : const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
4047 : const u8 *addr, int next)
4048 : {
4049 : struct p2p_device *dev;
4050 :
4051 932 : if (addr)
4052 931 : dev = p2p_get_device(p2p, addr);
4053 : else
4054 1 : dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4055 :
4056 932 : if (dev && next) {
4057 1 : dev = dl_list_first(&dev->list, struct p2p_device, list);
4058 1 : if (&dev->list == &p2p->devices)
4059 0 : dev = NULL;
4060 : }
4061 :
4062 932 : if (dev == NULL)
4063 431 : return NULL;
4064 :
4065 501 : return &dev->info;
4066 : }
4067 :
4068 :
4069 501 : int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
4070 : char *buf, size_t buflen)
4071 : {
4072 : struct p2p_device *dev;
4073 : int res;
4074 : char *pos, *end;
4075 : struct os_reltime now;
4076 :
4077 501 : if (info == NULL)
4078 0 : return -1;
4079 :
4080 501 : dev = (struct p2p_device *) (((u8 *) info) -
4081 : offsetof(struct p2p_device, info));
4082 :
4083 501 : pos = buf;
4084 501 : end = buf + buflen;
4085 :
4086 501 : os_get_reltime(&now);
4087 23127 : res = os_snprintf(pos, end - pos,
4088 : "age=%d\n"
4089 : "listen_freq=%d\n"
4090 : "wps_method=%s\n"
4091 : "interface_addr=" MACSTR "\n"
4092 : "member_in_go_dev=" MACSTR "\n"
4093 : "member_in_go_iface=" MACSTR "\n"
4094 : "go_neg_req_sent=%d\n"
4095 : "go_state=%s\n"
4096 : "dialog_token=%u\n"
4097 : "intended_addr=" MACSTR "\n"
4098 : "country=%c%c\n"
4099 : "oper_freq=%d\n"
4100 : "req_config_methods=0x%x\n"
4101 : "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
4102 : "status=%d\n"
4103 : "invitation_reqs=%u\n",
4104 1002 : (int) (now.sec - dev->last_seen.sec),
4105 : dev->listen_freq,
4106 : p2p_wps_method_text(dev->wps_method),
4107 3006 : MAC2STR(dev->interface_addr),
4108 3006 : MAC2STR(dev->member_in_go_dev),
4109 3006 : MAC2STR(dev->member_in_go_iface),
4110 : dev->go_neg_req_sent,
4111 : p2p_go_state_text(dev->go_state),
4112 501 : dev->dialog_token,
4113 3006 : MAC2STR(dev->intended_addr),
4114 792 : dev->country[0] ? dev->country[0] : '_',
4115 792 : dev->country[1] ? dev->country[1] : '_',
4116 : dev->oper_freq,
4117 501 : dev->req_config_methods,
4118 501 : dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
4119 : "[PROBE_REQ_ONLY]" : "",
4120 501 : dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
4121 501 : dev->flags & P2P_DEV_NOT_YET_READY ?
4122 : "[NOT_YET_READY]" : "",
4123 501 : dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
4124 : "[PD_PEER_DISPLAY]" : "",
4125 501 : dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
4126 : "[PD_PEER_KEYPAD]" : "",
4127 501 : dev->flags & P2P_DEV_PD_PEER_P2PS ?
4128 : "[PD_PEER_P2PS]" : "",
4129 501 : dev->flags & P2P_DEV_USER_REJECTED ?
4130 : "[USER_REJECTED]" : "",
4131 501 : dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
4132 : "[PEER_WAITING_RESPONSE]" : "",
4133 501 : dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
4134 : "[PREFER_PERSISTENT_GROUP]" : "",
4135 501 : dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
4136 : "[WAIT_GO_NEG_RESPONSE]" : "",
4137 501 : dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
4138 : "[WAIT_GO_NEG_CONFIRM]" : "",
4139 501 : dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
4140 : "[GROUP_CLIENT_ONLY]" : "",
4141 501 : dev->flags & P2P_DEV_FORCE_FREQ ?
4142 : "[FORCE_FREQ]" : "",
4143 501 : dev->flags & P2P_DEV_PD_FOR_JOIN ?
4144 : "[PD_FOR_JOIN]" : "",
4145 : dev->status,
4146 : dev->invitation_reqs);
4147 501 : if (os_snprintf_error(end - pos, res))
4148 0 : return pos - buf;
4149 501 : pos += res;
4150 :
4151 501 : if (dev->ext_listen_period) {
4152 10 : res = os_snprintf(pos, end - pos,
4153 : "ext_listen_period=%u\n"
4154 : "ext_listen_interval=%u\n",
4155 5 : dev->ext_listen_period,
4156 5 : dev->ext_listen_interval);
4157 5 : if (os_snprintf_error(end - pos, res))
4158 0 : return pos - buf;
4159 5 : pos += res;
4160 : }
4161 :
4162 501 : if (dev->oper_ssid_len) {
4163 212 : res = os_snprintf(pos, end - pos,
4164 : "oper_ssid=%s\n",
4165 106 : wpa_ssid_txt(dev->oper_ssid,
4166 : dev->oper_ssid_len));
4167 106 : if (os_snprintf_error(end - pos, res))
4168 0 : return pos - buf;
4169 106 : pos += res;
4170 : }
4171 :
4172 : #ifdef CONFIG_WIFI_DISPLAY
4173 501 : if (dev->info.wfd_subelems) {
4174 22 : res = os_snprintf(pos, end - pos, "wfd_subelems=");
4175 22 : if (os_snprintf_error(end - pos, res))
4176 0 : return pos - buf;
4177 22 : pos += res;
4178 :
4179 44 : pos += wpa_snprintf_hex(pos, end - pos,
4180 22 : wpabuf_head(dev->info.wfd_subelems),
4181 22 : wpabuf_len(dev->info.wfd_subelems));
4182 :
4183 22 : res = os_snprintf(pos, end - pos, "\n");
4184 22 : if (os_snprintf_error(end - pos, res))
4185 0 : return pos - buf;
4186 22 : pos += res;
4187 : }
4188 : #endif /* CONFIG_WIFI_DISPLAY */
4189 :
4190 501 : return pos - buf;
4191 : }
4192 :
4193 :
4194 128 : int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
4195 : {
4196 128 : return p2p_get_device(p2p, addr) != NULL;
4197 : }
4198 :
4199 :
4200 2 : void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
4201 : {
4202 2 : if (enabled) {
4203 1 : p2p_dbg(p2p, "Client discoverability enabled");
4204 1 : p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4205 : } else {
4206 1 : p2p_dbg(p2p, "Client discoverability disabled");
4207 1 : p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4208 : }
4209 2 : }
4210 :
4211 :
4212 5 : static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
4213 : u32 duration2, u32 interval2)
4214 : {
4215 : struct wpabuf *req;
4216 5 : struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
4217 : u8 *len;
4218 :
4219 5 : req = wpabuf_alloc(100);
4220 5 : if (req == NULL)
4221 0 : return NULL;
4222 :
4223 5 : if (duration1 || interval1) {
4224 4 : os_memset(&desc1, 0, sizeof(desc1));
4225 4 : desc1.count_type = 1;
4226 4 : desc1.duration = duration1;
4227 4 : desc1.interval = interval1;
4228 4 : ptr1 = &desc1;
4229 :
4230 4 : if (duration2 || interval2) {
4231 2 : os_memset(&desc2, 0, sizeof(desc2));
4232 2 : desc2.count_type = 2;
4233 2 : desc2.duration = duration2;
4234 2 : desc2.interval = interval2;
4235 2 : ptr2 = &desc2;
4236 : }
4237 : }
4238 :
4239 5 : p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
4240 5 : len = p2p_buf_add_ie_hdr(req);
4241 5 : p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
4242 5 : p2p_buf_update_ie_hdr(req, len);
4243 :
4244 5 : return req;
4245 : }
4246 :
4247 :
4248 5 : int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
4249 : const u8 *own_interface_addr, unsigned int freq,
4250 : u32 duration1, u32 interval1, u32 duration2,
4251 : u32 interval2)
4252 : {
4253 : struct wpabuf *req;
4254 :
4255 60 : p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
4256 : " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
4257 : "dur2=%u int2=%u",
4258 60 : MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
4259 : freq, duration1, interval1, duration2, interval2);
4260 :
4261 5 : req = p2p_build_presence_req(duration1, interval1, duration2,
4262 : interval2);
4263 5 : if (req == NULL)
4264 0 : return -1;
4265 :
4266 5 : p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4267 10 : if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
4268 : go_interface_addr,
4269 5 : wpabuf_head(req), wpabuf_len(req), 200) < 0) {
4270 0 : p2p_dbg(p2p, "Failed to send Action frame");
4271 : }
4272 5 : wpabuf_free(req);
4273 :
4274 5 : return 0;
4275 : }
4276 :
4277 :
4278 5 : static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
4279 : size_t noa_len, u8 dialog_token)
4280 : {
4281 : struct wpabuf *resp;
4282 : u8 *len;
4283 :
4284 5 : resp = wpabuf_alloc(100 + noa_len);
4285 5 : if (resp == NULL)
4286 0 : return NULL;
4287 :
4288 5 : p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
4289 5 : len = p2p_buf_add_ie_hdr(resp);
4290 5 : p2p_buf_add_status(resp, status);
4291 5 : if (noa) {
4292 0 : wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
4293 0 : wpabuf_put_le16(resp, noa_len);
4294 0 : wpabuf_put_data(resp, noa, noa_len);
4295 : } else
4296 5 : p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
4297 5 : p2p_buf_update_ie_hdr(resp, len);
4298 :
4299 5 : return resp;
4300 : }
4301 :
4302 :
4303 5 : static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
4304 : const u8 *sa, const u8 *data, size_t len,
4305 : int rx_freq)
4306 : {
4307 : struct p2p_message msg;
4308 : u8 status;
4309 : struct wpabuf *resp;
4310 : size_t g;
4311 5 : struct p2p_group *group = NULL;
4312 5 : int parsed = 0;
4313 : u8 noa[50];
4314 : int noa_len;
4315 :
4316 5 : p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
4317 :
4318 5 : for (g = 0; g < p2p->num_groups; g++) {
4319 5 : if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
4320 : ETH_ALEN) == 0) {
4321 5 : group = p2p->groups[g];
4322 5 : break;
4323 : }
4324 : }
4325 5 : if (group == NULL) {
4326 0 : p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
4327 0 : MACSTR, MAC2STR(da));
4328 0 : return;
4329 : }
4330 :
4331 5 : if (p2p_parse(data, len, &msg) < 0) {
4332 0 : p2p_dbg(p2p, "Failed to parse P2P Presence Request");
4333 0 : status = P2P_SC_FAIL_INVALID_PARAMS;
4334 0 : goto fail;
4335 : }
4336 5 : parsed = 1;
4337 :
4338 5 : if (msg.noa == NULL) {
4339 0 : p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
4340 0 : status = P2P_SC_FAIL_INVALID_PARAMS;
4341 0 : goto fail;
4342 : }
4343 :
4344 5 : status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
4345 :
4346 : fail:
4347 5 : if (p2p->cfg->get_noa)
4348 5 : noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
4349 : sizeof(noa));
4350 : else
4351 0 : noa_len = -1;
4352 10 : resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
4353 5 : noa_len > 0 ? noa_len : 0,
4354 5 : msg.dialog_token);
4355 5 : if (parsed)
4356 5 : p2p_parse_free(&msg);
4357 5 : if (resp == NULL)
4358 0 : return;
4359 :
4360 5 : p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4361 10 : if (p2p_send_action(p2p, rx_freq, sa, da, da,
4362 5 : wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
4363 0 : p2p_dbg(p2p, "Failed to send Action frame");
4364 : }
4365 5 : wpabuf_free(resp);
4366 : }
4367 :
4368 :
4369 5 : static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
4370 : const u8 *sa, const u8 *data, size_t len)
4371 : {
4372 : struct p2p_message msg;
4373 :
4374 5 : p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
4375 :
4376 5 : if (p2p_parse(data, len, &msg) < 0) {
4377 0 : p2p_dbg(p2p, "Failed to parse P2P Presence Response");
4378 0 : return;
4379 : }
4380 :
4381 5 : if (msg.status == NULL || msg.noa == NULL) {
4382 0 : p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
4383 0 : p2p_parse_free(&msg);
4384 0 : return;
4385 : }
4386 :
4387 5 : if (p2p->cfg->presence_resp) {
4388 5 : p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
4389 : msg.noa, msg.noa_len);
4390 : }
4391 :
4392 5 : if (*msg.status) {
4393 5 : p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
4394 5 : *msg.status);
4395 5 : p2p_parse_free(&msg);
4396 5 : return;
4397 : }
4398 :
4399 0 : p2p_dbg(p2p, "P2P Presence Request was accepted");
4400 0 : wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
4401 0 : msg.noa, msg.noa_len);
4402 : /* TODO: process NoA */
4403 0 : p2p_parse_free(&msg);
4404 : }
4405 :
4406 :
4407 5 : static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4408 : {
4409 5 : struct p2p_data *p2p = eloop_ctx;
4410 :
4411 5 : if (p2p->ext_listen_interval) {
4412 : /* Schedule next extended listen timeout */
4413 5 : eloop_register_timeout(p2p->ext_listen_interval_sec,
4414 : p2p->ext_listen_interval_usec,
4415 : p2p_ext_listen_timeout, p2p, NULL);
4416 : }
4417 :
4418 10 : if ((p2p->cfg->is_p2p_in_progress &&
4419 10 : p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
4420 5 : (p2p->pending_action_state == P2P_PENDING_PD &&
4421 0 : p2p->pd_retries > 0)) {
4422 0 : p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
4423 0 : p2p_state_txt(p2p->state));
4424 0 : return;
4425 : }
4426 :
4427 5 : if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
4428 : /*
4429 : * This should not really happen, but it looks like the Listen
4430 : * command may fail is something else (e.g., a scan) was
4431 : * running at an inconvenient time. As a workaround, allow new
4432 : * Extended Listen operation to be started.
4433 : */
4434 0 : p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
4435 0 : p2p->ext_listen_only = 0;
4436 0 : p2p_set_state(p2p, P2P_IDLE);
4437 : }
4438 :
4439 5 : if (p2p->state != P2P_IDLE) {
4440 1 : p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
4441 1 : return;
4442 : }
4443 :
4444 4 : p2p_dbg(p2p, "Extended Listen timeout");
4445 4 : p2p->ext_listen_only = 1;
4446 4 : if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
4447 0 : p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
4448 0 : p2p->ext_listen_only = 0;
4449 : }
4450 : }
4451 :
4452 :
4453 7 : int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
4454 : unsigned int interval)
4455 : {
4456 7 : if (period > 65535 || interval > 65535 || period > interval ||
4457 4 : (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
4458 0 : p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
4459 : period, interval);
4460 0 : return -1;
4461 : }
4462 :
4463 7 : eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
4464 :
4465 7 : if (interval == 0) {
4466 4 : p2p_dbg(p2p, "Disabling Extended Listen Timing");
4467 4 : p2p->ext_listen_period = 0;
4468 4 : p2p->ext_listen_interval = 0;
4469 4 : return 0;
4470 : }
4471 :
4472 3 : p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
4473 : period, interval);
4474 3 : p2p->ext_listen_period = period;
4475 3 : p2p->ext_listen_interval = interval;
4476 3 : p2p->ext_listen_interval_sec = interval / 1000;
4477 3 : p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
4478 :
4479 3 : eloop_register_timeout(p2p->ext_listen_interval_sec,
4480 : p2p->ext_listen_interval_usec,
4481 : p2p_ext_listen_timeout, p2p, NULL);
4482 :
4483 3 : return 0;
4484 : }
4485 :
4486 :
4487 276 : void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4488 : const u8 *ie, size_t ie_len)
4489 : {
4490 : struct p2p_message msg;
4491 :
4492 276 : if (bssid == NULL || ie == NULL)
4493 550 : return;
4494 :
4495 1 : os_memset(&msg, 0, sizeof(msg));
4496 1 : if (p2p_parse_ies(ie, ie_len, &msg))
4497 0 : return;
4498 1 : if (msg.minor_reason_code == NULL) {
4499 0 : p2p_parse_free(&msg);
4500 0 : return;
4501 : }
4502 :
4503 7 : p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
4504 : " reason_code=%u minor_reason_code=%u",
4505 7 : MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4506 :
4507 1 : p2p_parse_free(&msg);
4508 : }
4509 :
4510 :
4511 3 : void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4512 : const u8 *ie, size_t ie_len)
4513 : {
4514 : struct p2p_message msg;
4515 :
4516 3 : if (bssid == NULL || ie == NULL)
4517 4 : return;
4518 :
4519 1 : os_memset(&msg, 0, sizeof(msg));
4520 1 : if (p2p_parse_ies(ie, ie_len, &msg))
4521 0 : return;
4522 1 : if (msg.minor_reason_code == NULL) {
4523 0 : p2p_parse_free(&msg);
4524 0 : return;
4525 : }
4526 :
4527 7 : p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
4528 : " reason_code=%u minor_reason_code=%u",
4529 7 : MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4530 :
4531 1 : p2p_parse_free(&msg);
4532 : }
4533 :
4534 :
4535 2 : void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4536 : {
4537 2 : if (enabled) {
4538 1 : p2p_dbg(p2p, "Managed P2P Device operations enabled");
4539 1 : p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4540 : } else {
4541 1 : p2p_dbg(p2p, "Managed P2P Device operations disabled");
4542 1 : p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4543 : }
4544 2 : }
4545 :
4546 :
4547 160 : int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
4548 : u8 *op_channel)
4549 : {
4550 160 : return p2p_channel_random_social(&p2p->channels, op_class, op_channel);
4551 : }
4552 :
4553 :
4554 7 : int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
4555 : u8 forced)
4556 : {
4557 7 : if (p2p_channel_to_freq(reg_class, channel) < 0)
4558 0 : return -1;
4559 :
4560 : /*
4561 : * Listen channel was set in configuration or set by control interface;
4562 : * cannot override it.
4563 : */
4564 7 : if (p2p->cfg->channel_forced && forced == 0) {
4565 1 : p2p_dbg(p2p,
4566 : "Listen channel was previously configured - do not override based on optimization");
4567 1 : return -1;
4568 : }
4569 :
4570 6 : p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4571 : reg_class, channel);
4572 :
4573 6 : if (p2p->state == P2P_IDLE) {
4574 6 : p2p->cfg->reg_class = reg_class;
4575 6 : p2p->cfg->channel = channel;
4576 6 : p2p->cfg->channel_forced = forced;
4577 : } else {
4578 0 : p2p_dbg(p2p, "Defer setting listen channel");
4579 0 : p2p->pending_reg_class = reg_class;
4580 0 : p2p->pending_channel = channel;
4581 0 : p2p->pending_channel_forced = forced;
4582 : }
4583 :
4584 6 : return 0;
4585 : }
4586 :
4587 :
4588 3 : u8 p2p_get_listen_channel(struct p2p_data *p2p)
4589 : {
4590 3 : return p2p->cfg->channel;
4591 : }
4592 :
4593 :
4594 7 : int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4595 : {
4596 7 : p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
4597 7 : if (postfix == NULL) {
4598 1 : p2p->cfg->ssid_postfix_len = 0;
4599 1 : return 0;
4600 : }
4601 6 : if (len > sizeof(p2p->cfg->ssid_postfix))
4602 1 : return -1;
4603 5 : os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4604 5 : p2p->cfg->ssid_postfix_len = len;
4605 5 : return 0;
4606 : }
4607 :
4608 :
4609 8 : int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4610 : int cfg_op_channel)
4611 : {
4612 8 : if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
4613 1 : return -1;
4614 :
4615 7 : p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4616 : op_reg_class, op_channel);
4617 7 : p2p->cfg->op_reg_class = op_reg_class;
4618 7 : p2p->cfg->op_channel = op_channel;
4619 7 : p2p->cfg->cfg_op_channel = cfg_op_channel;
4620 7 : return 0;
4621 : }
4622 :
4623 :
4624 6316 : int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4625 : const struct p2p_channel *pref_chan)
4626 : {
4627 : struct p2p_channel *n;
4628 :
4629 6316 : if (pref_chan) {
4630 8 : n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4631 8 : if (n == NULL)
4632 0 : return -1;
4633 8 : os_memcpy(n, pref_chan,
4634 : num_pref_chan * sizeof(struct p2p_channel));
4635 : } else
4636 6308 : n = NULL;
4637 :
4638 6316 : os_free(p2p->cfg->pref_chan);
4639 6316 : p2p->cfg->pref_chan = n;
4640 6316 : p2p->cfg->num_pref_chan = num_pref_chan;
4641 :
4642 6316 : return 0;
4643 : }
4644 :
4645 :
4646 6396 : int p2p_set_no_go_freq(struct p2p_data *p2p,
4647 : const struct wpa_freq_range_list *list)
4648 : {
4649 : struct wpa_freq_range *tmp;
4650 :
4651 6396 : if (list == NULL || list->num == 0) {
4652 6392 : os_free(p2p->no_go_freq.range);
4653 6392 : p2p->no_go_freq.range = NULL;
4654 6392 : p2p->no_go_freq.num = 0;
4655 6392 : return 0;
4656 : }
4657 :
4658 4 : tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4659 4 : if (tmp == NULL)
4660 0 : return -1;
4661 4 : os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4662 4 : os_free(p2p->no_go_freq.range);
4663 4 : p2p->no_go_freq.range = tmp;
4664 4 : p2p->no_go_freq.num = list->num;
4665 4 : p2p_dbg(p2p, "Updated no GO chan list");
4666 :
4667 4 : return 0;
4668 : }
4669 :
4670 :
4671 111 : int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4672 : u8 *iface_addr)
4673 : {
4674 111 : struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4675 111 : if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4676 103 : return -1;
4677 8 : os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4678 8 : return 0;
4679 : }
4680 :
4681 :
4682 50 : int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4683 : u8 *dev_addr)
4684 : {
4685 50 : struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4686 50 : if (dev == NULL)
4687 50 : return -1;
4688 0 : os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4689 0 : return 0;
4690 : }
4691 :
4692 :
4693 2 : void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4694 : {
4695 2 : os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4696 2 : if (is_zero_ether_addr(p2p->peer_filter))
4697 1 : p2p_dbg(p2p, "Disable peer filter");
4698 : else
4699 6 : p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4700 6 : MAC2STR(p2p->peer_filter));
4701 2 : }
4702 :
4703 :
4704 5 : void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4705 : {
4706 5 : p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4707 5 : if (p2p->cross_connect == enabled)
4708 6 : return;
4709 4 : p2p->cross_connect = enabled;
4710 : /* TODO: may need to tear down any action group where we are GO(?) */
4711 : }
4712 :
4713 :
4714 96 : int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4715 : {
4716 96 : struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4717 96 : if (dev == NULL)
4718 88 : return -1;
4719 8 : if (dev->oper_freq <= 0)
4720 8 : return -1;
4721 0 : return dev->oper_freq;
4722 : }
4723 :
4724 :
4725 2 : void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4726 : {
4727 2 : p2p_dbg(p2p, "Intra BSS distribution %s",
4728 : enabled ? "enabled" : "disabled");
4729 2 : p2p->cfg->p2p_intra_bss = enabled;
4730 2 : }
4731 :
4732 :
4733 6971 : void p2p_update_channel_list(struct p2p_data *p2p,
4734 : const struct p2p_channels *chan,
4735 : const struct p2p_channels *cli_chan)
4736 : {
4737 6971 : p2p_dbg(p2p, "Update channel list");
4738 6971 : os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4739 6971 : p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4740 6971 : os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4741 : sizeof(struct p2p_channels));
4742 6971 : p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4743 6971 : }
4744 :
4745 :
4746 1031 : int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4747 : const u8 *src, const u8 *bssid, const u8 *buf,
4748 : size_t len, unsigned int wait_time)
4749 : {
4750 1031 : if (p2p->p2p_scan_running) {
4751 7 : p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4752 7 : if (p2p->after_scan_tx) {
4753 0 : p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4754 0 : os_free(p2p->after_scan_tx);
4755 : }
4756 7 : p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4757 : len);
4758 7 : if (p2p->after_scan_tx == NULL)
4759 0 : return -1;
4760 7 : p2p->after_scan_tx->freq = freq;
4761 7 : os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4762 7 : os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4763 7 : os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4764 7 : p2p->after_scan_tx->len = len;
4765 7 : p2p->after_scan_tx->wait_time = wait_time;
4766 7 : os_memcpy(p2p->after_scan_tx + 1, buf, len);
4767 7 : return 0;
4768 : }
4769 :
4770 1024 : return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4771 : buf, len, wait_time);
4772 : }
4773 :
4774 :
4775 0 : void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4776 : int freq_overall)
4777 : {
4778 0 : p2p_dbg(p2p, "Best channel: 2.4 GHz: %d, 5 GHz: %d, overall: %d",
4779 : freq_24, freq_5, freq_overall);
4780 0 : p2p->best_freq_24 = freq_24;
4781 0 : p2p->best_freq_5 = freq_5;
4782 0 : p2p->best_freq_overall = freq_overall;
4783 0 : }
4784 :
4785 :
4786 283 : void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4787 : {
4788 283 : p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4789 283 : p2p->own_freq_preference = freq;
4790 283 : }
4791 :
4792 :
4793 3175 : const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4794 : {
4795 3175 : if (p2p == NULL || p2p->go_neg_peer == NULL)
4796 3170 : return NULL;
4797 5 : return p2p->go_neg_peer->info.p2p_device_addr;
4798 : }
4799 :
4800 :
4801 : const struct p2p_peer_info *
4802 746 : p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4803 : {
4804 : struct p2p_device *dev;
4805 :
4806 746 : if (addr) {
4807 740 : dev = p2p_get_device(p2p, addr);
4808 740 : if (!dev)
4809 0 : return NULL;
4810 :
4811 740 : if (!next) {
4812 732 : if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4813 0 : return NULL;
4814 :
4815 732 : return &dev->info;
4816 : } else {
4817 : do {
4818 8 : dev = dl_list_first(&dev->list,
4819 : struct p2p_device,
4820 : list);
4821 8 : if (!dev || &dev->list == &p2p->devices)
4822 5 : return NULL;
4823 3 : } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4824 : }
4825 : } else {
4826 6 : dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4827 6 : if (!dev)
4828 1 : return NULL;
4829 10 : while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4830 0 : dev = dl_list_first(&dev->list,
4831 : struct p2p_device,
4832 : list);
4833 0 : if (!dev || &dev->list == &p2p->devices)
4834 0 : return NULL;
4835 : }
4836 : }
4837 :
4838 8 : return &dev->info;
4839 : }
4840 :
4841 :
4842 2206 : int p2p_in_progress(struct p2p_data *p2p)
4843 : {
4844 2206 : if (p2p == NULL)
4845 0 : return 0;
4846 2206 : if (p2p->state == P2P_SEARCH)
4847 2 : return 2;
4848 2204 : return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4849 : }
4850 :
4851 :
4852 155 : void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4853 : u8 client_timeout)
4854 : {
4855 155 : if (p2p) {
4856 155 : p2p->go_timeout = go_timeout;
4857 155 : p2p->client_timeout = client_timeout;
4858 : }
4859 155 : }
4860 :
4861 :
4862 : #ifdef CONFIG_WIFI_DISPLAY
4863 :
4864 124 : static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4865 : {
4866 : size_t g;
4867 : struct p2p_group *group;
4868 :
4869 128 : for (g = 0; g < p2p->num_groups; g++) {
4870 4 : group = p2p->groups[g];
4871 4 : p2p_group_force_beacon_update_ies(group);
4872 : }
4873 124 : }
4874 :
4875 :
4876 62 : int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4877 : {
4878 62 : wpabuf_free(p2p->wfd_ie_beacon);
4879 62 : p2p->wfd_ie_beacon = ie;
4880 62 : p2p_update_wfd_ie_groups(p2p);
4881 62 : return 0;
4882 : }
4883 :
4884 :
4885 62 : int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4886 : {
4887 62 : wpabuf_free(p2p->wfd_ie_probe_req);
4888 62 : p2p->wfd_ie_probe_req = ie;
4889 62 : return 0;
4890 : }
4891 :
4892 :
4893 62 : int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4894 : {
4895 62 : wpabuf_free(p2p->wfd_ie_probe_resp);
4896 62 : p2p->wfd_ie_probe_resp = ie;
4897 62 : p2p_update_wfd_ie_groups(p2p);
4898 62 : return 0;
4899 : }
4900 :
4901 :
4902 62 : int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4903 : {
4904 62 : wpabuf_free(p2p->wfd_ie_assoc_req);
4905 62 : p2p->wfd_ie_assoc_req = ie;
4906 62 : return 0;
4907 : }
4908 :
4909 :
4910 62 : int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4911 : {
4912 62 : wpabuf_free(p2p->wfd_ie_invitation);
4913 62 : p2p->wfd_ie_invitation = ie;
4914 62 : return 0;
4915 : }
4916 :
4917 :
4918 62 : int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4919 : {
4920 62 : wpabuf_free(p2p->wfd_ie_prov_disc_req);
4921 62 : p2p->wfd_ie_prov_disc_req = ie;
4922 62 : return 0;
4923 : }
4924 :
4925 :
4926 62 : int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4927 : {
4928 62 : wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4929 62 : p2p->wfd_ie_prov_disc_resp = ie;
4930 62 : return 0;
4931 : }
4932 :
4933 :
4934 62 : int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4935 : {
4936 62 : wpabuf_free(p2p->wfd_ie_go_neg);
4937 62 : p2p->wfd_ie_go_neg = ie;
4938 62 : return 0;
4939 : }
4940 :
4941 :
4942 62 : int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4943 : {
4944 62 : wpabuf_free(p2p->wfd_dev_info);
4945 62 : if (elem) {
4946 30 : p2p->wfd_dev_info = wpabuf_dup(elem);
4947 30 : if (p2p->wfd_dev_info == NULL)
4948 0 : return -1;
4949 : } else
4950 32 : p2p->wfd_dev_info = NULL;
4951 :
4952 62 : return 0;
4953 : }
4954 :
4955 :
4956 62 : int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4957 : {
4958 62 : wpabuf_free(p2p->wfd_assoc_bssid);
4959 62 : if (elem) {
4960 15 : p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4961 15 : if (p2p->wfd_assoc_bssid == NULL)
4962 0 : return -1;
4963 : } else
4964 47 : p2p->wfd_assoc_bssid = NULL;
4965 :
4966 62 : return 0;
4967 : }
4968 :
4969 :
4970 62 : int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4971 : const struct wpabuf *elem)
4972 : {
4973 62 : wpabuf_free(p2p->wfd_coupled_sink_info);
4974 62 : if (elem) {
4975 9 : p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4976 9 : if (p2p->wfd_coupled_sink_info == NULL)
4977 0 : return -1;
4978 : } else
4979 53 : p2p->wfd_coupled_sink_info = NULL;
4980 :
4981 62 : return 0;
4982 : }
4983 :
4984 : #endif /* CONFIG_WIFI_DISPLAY */
4985 :
4986 :
4987 3 : int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
4988 : int max_disc_tu)
4989 : {
4990 3 : if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
4991 3 : return -1;
4992 :
4993 0 : p2p->min_disc_int = min_disc_int;
4994 0 : p2p->max_disc_int = max_disc_int;
4995 0 : p2p->max_disc_tu = max_disc_tu;
4996 0 : p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
4997 : min_disc_int, max_disc_int, max_disc_tu);
4998 :
4999 0 : return 0;
5000 : }
5001 :
5002 :
5003 87850 : void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
5004 : {
5005 : va_list ap;
5006 : char buf[500];
5007 :
5008 87850 : if (!p2p->cfg->debug_print)
5009 87850 : return;
5010 :
5011 87850 : va_start(ap, fmt);
5012 87850 : vsnprintf(buf, sizeof(buf), fmt, ap);
5013 87850 : buf[sizeof(buf) - 1] = '\0';
5014 87850 : va_end(ap);
5015 87850 : p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
5016 : }
5017 :
5018 :
5019 6 : void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
5020 : {
5021 : va_list ap;
5022 : char buf[500];
5023 :
5024 6 : if (!p2p->cfg->debug_print)
5025 6 : return;
5026 :
5027 6 : va_start(ap, fmt);
5028 6 : vsnprintf(buf, sizeof(buf), fmt, ap);
5029 6 : buf[sizeof(buf) - 1] = '\0';
5030 6 : va_end(ap);
5031 6 : p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
5032 : }
5033 :
5034 :
5035 0 : void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
5036 : {
5037 : va_list ap;
5038 : char buf[500];
5039 :
5040 0 : if (!p2p->cfg->debug_print)
5041 0 : return;
5042 :
5043 0 : va_start(ap, fmt);
5044 0 : vsnprintf(buf, sizeof(buf), fmt, ap);
5045 0 : buf[sizeof(buf) - 1] = '\0';
5046 0 : va_end(ap);
5047 0 : p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
5048 : }
5049 :
5050 :
5051 243 : void p2p_loop_on_known_peers(struct p2p_data *p2p,
5052 : void (*peer_callback)(struct p2p_peer_info *peer,
5053 : void *user_data),
5054 : void *user_data)
5055 : {
5056 : struct p2p_device *dev, *n;
5057 :
5058 434 : dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
5059 191 : peer_callback(&dev->info, user_data);
5060 : }
5061 243 : }
5062 :
5063 :
5064 : #ifdef CONFIG_WPS_NFC
5065 :
5066 30 : static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
5067 : int client_freq,
5068 : const u8 *go_dev_addr,
5069 : const u8 *ssid, size_t ssid_len)
5070 : {
5071 : struct wpabuf *buf;
5072 : u8 op_class, channel;
5073 30 : enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
5074 :
5075 30 : buf = wpabuf_alloc(1000);
5076 30 : if (buf == NULL)
5077 0 : return NULL;
5078 :
5079 30 : op_class = p2p->cfg->reg_class;
5080 30 : channel = p2p->cfg->channel;
5081 :
5082 30 : p2p_buf_add_capability(buf, p2p->dev_capab &
5083 : ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
5084 30 : p2p_buf_add_device_info(buf, p2p, NULL);
5085 :
5086 30 : if (p2p->num_groups > 0) {
5087 5 : int freq = p2p_group_get_freq(p2p->groups[0]);
5088 5 : role = P2P_GO_IN_A_GROUP;
5089 5 : if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
5090 0 : p2p_dbg(p2p,
5091 : "Unknown GO operating frequency %d MHz for NFC handover",
5092 : freq);
5093 0 : wpabuf_free(buf);
5094 0 : return NULL;
5095 : }
5096 25 : } else if (client_freq > 0) {
5097 1 : role = P2P_CLIENT_IN_A_GROUP;
5098 1 : if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
5099 0 : p2p_dbg(p2p,
5100 : "Unknown client operating frequency %d MHz for NFC handover",
5101 : client_freq);
5102 0 : wpabuf_free(buf);
5103 0 : return NULL;
5104 : }
5105 : }
5106 :
5107 30 : p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
5108 : channel, role);
5109 :
5110 30 : if (p2p->num_groups > 0) {
5111 : /* Limit number of clients to avoid very long message */
5112 5 : p2p_buf_add_group_info(p2p->groups[0], buf, 5);
5113 5 : p2p_group_buf_add_id(p2p->groups[0], buf);
5114 25 : } else if (client_freq > 0 &&
5115 1 : go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
5116 1 : ssid && ssid_len > 0) {
5117 : /*
5118 : * Add the optional P2P Group ID to indicate in which group this
5119 : * device is a P2P Client.
5120 : */
5121 1 : p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
5122 : }
5123 :
5124 30 : return buf;
5125 : }
5126 :
5127 :
5128 10 : struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
5129 : int client_freq,
5130 : const u8 *go_dev_addr,
5131 : const u8 *ssid, size_t ssid_len)
5132 : {
5133 10 : return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5134 : ssid_len);
5135 : }
5136 :
5137 :
5138 20 : struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
5139 : int client_freq,
5140 : const u8 *go_dev_addr,
5141 : const u8 *ssid, size_t ssid_len)
5142 : {
5143 20 : return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5144 : ssid_len);
5145 : }
5146 :
5147 :
5148 25 : int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
5149 : struct p2p_nfc_params *params)
5150 : {
5151 : struct p2p_message msg;
5152 : struct p2p_device *dev;
5153 : const u8 *p2p_dev_addr;
5154 : int freq;
5155 : enum p2p_role_indication role;
5156 :
5157 25 : params->next_step = NO_ACTION;
5158 :
5159 25 : if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
5160 : params->p2p_attr, params->p2p_len, &msg)) {
5161 0 : p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
5162 0 : p2p_parse_free(&msg);
5163 0 : return -1;
5164 : }
5165 :
5166 25 : if (msg.p2p_device_addr)
5167 25 : p2p_dev_addr = msg.p2p_device_addr;
5168 0 : else if (msg.device_id)
5169 0 : p2p_dev_addr = msg.device_id;
5170 : else {
5171 0 : p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
5172 0 : p2p_parse_free(&msg);
5173 0 : return -1;
5174 : }
5175 :
5176 25 : if (msg.oob_dev_password) {
5177 24 : os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
5178 : msg.oob_dev_password_len);
5179 24 : params->oob_dev_pw_len = msg.oob_dev_password_len;
5180 : }
5181 :
5182 25 : dev = p2p_create_device(p2p, p2p_dev_addr);
5183 25 : if (dev == NULL) {
5184 0 : p2p_parse_free(&msg);
5185 0 : return -1;
5186 : }
5187 :
5188 25 : params->peer = &dev->info;
5189 :
5190 25 : os_get_reltime(&dev->last_seen);
5191 25 : dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
5192 25 : p2p_copy_wps_info(p2p, dev, 0, &msg);
5193 :
5194 25 : if (!msg.oob_go_neg_channel) {
5195 0 : p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
5196 0 : return -1;
5197 : }
5198 :
5199 25 : if (msg.oob_go_neg_channel[3] == 0 &&
5200 0 : msg.oob_go_neg_channel[4] == 0)
5201 0 : freq = 0;
5202 : else
5203 25 : freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
5204 25 : msg.oob_go_neg_channel[4]);
5205 25 : if (freq < 0) {
5206 0 : p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
5207 0 : return -1;
5208 : }
5209 25 : role = msg.oob_go_neg_channel[5];
5210 :
5211 25 : if (role == P2P_GO_IN_A_GROUP) {
5212 6 : p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
5213 6 : params->go_freq = freq;
5214 19 : } else if (role == P2P_CLIENT_IN_A_GROUP) {
5215 1 : p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
5216 : freq);
5217 1 : params->go_freq = freq;
5218 : } else
5219 18 : p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
5220 25 : dev->oob_go_neg_freq = freq;
5221 :
5222 25 : if (!params->sel && role != P2P_GO_IN_A_GROUP) {
5223 6 : freq = p2p_channel_to_freq(p2p->cfg->reg_class,
5224 6 : p2p->cfg->channel);
5225 6 : if (freq < 0) {
5226 0 : p2p_dbg(p2p, "Own listen channel not known");
5227 0 : return -1;
5228 : }
5229 6 : p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
5230 6 : dev->oob_go_neg_freq = freq;
5231 : }
5232 :
5233 25 : if (msg.group_id) {
5234 7 : os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
5235 7 : params->go_ssid_len = msg.group_id_len - ETH_ALEN;
5236 7 : os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
5237 : params->go_ssid_len);
5238 : }
5239 :
5240 25 : if (dev->flags & P2P_DEV_USER_REJECTED) {
5241 0 : p2p_dbg(p2p, "Do not report rejected device");
5242 0 : p2p_parse_free(&msg);
5243 0 : return 0;
5244 : }
5245 :
5246 25 : if (!(dev->flags & P2P_DEV_REPORTED)) {
5247 50 : p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
5248 25 : !(dev->flags & P2P_DEV_REPORTED_ONCE));
5249 25 : dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
5250 : }
5251 25 : p2p_parse_free(&msg);
5252 :
5253 25 : if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
5254 2 : params->next_step = BOTH_GO;
5255 23 : else if (role == P2P_GO_IN_A_GROUP)
5256 4 : params->next_step = JOIN_GROUP;
5257 19 : else if (role == P2P_CLIENT_IN_A_GROUP) {
5258 1 : dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
5259 1 : params->next_step = PEER_CLIENT;
5260 18 : } else if (p2p->num_groups > 0)
5261 5 : params->next_step = AUTH_JOIN;
5262 13 : else if (params->sel)
5263 9 : params->next_step = INIT_GO_NEG;
5264 : else
5265 4 : params->next_step = RESP_GO_NEG;
5266 :
5267 25 : return 0;
5268 : }
5269 :
5270 :
5271 14 : void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
5272 : int go_intent,
5273 : const u8 *own_interface_addr)
5274 : {
5275 :
5276 14 : p2p->authorized_oob_dev_pw_id = dev_pw_id;
5277 14 : if (dev_pw_id == 0) {
5278 3 : p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
5279 17 : return;
5280 : }
5281 :
5282 11 : p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
5283 : dev_pw_id);
5284 :
5285 11 : p2p->go_intent = go_intent;
5286 11 : os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
5287 : }
5288 :
5289 : #endif /* CONFIG_WPS_NFC */
5290 :
5291 :
5292 3 : int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len)
5293 : {
5294 3 : if (len < 8 || len > 63)
5295 1 : return -1;
5296 2 : p2p->cfg->passphrase_len = len;
5297 2 : return 0;
5298 : }
5299 :
5300 :
5301 20 : void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem)
5302 : {
5303 20 : p2p->vendor_elem = vendor_elem;
5304 20 : }
5305 :
5306 :
5307 2 : void p2p_go_neg_wait_timeout(void *eloop_ctx, void *timeout_ctx)
5308 : {
5309 2 : struct p2p_data *p2p = eloop_ctx;
5310 :
5311 2 : p2p_dbg(p2p,
5312 : "Timeout on waiting peer to become ready for GO Negotiation");
5313 2 : p2p_go_neg_failed(p2p, -1);
5314 2 : }
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